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I pulled an OD relay(red) with harness off of an 86 with an M46. I am installing this in a 91 240 wagon that has an AW71 (white) relay. I have used the wiring diagrams to try and figure this out but I am lost.
The current white relay harness has a blue with black stripe wire that comes off the relay and goes to 31/5 and a yellow with red wire that goes to 32.
If I use the 86 harneSS (red) relay there will be an orange wire and a blue wire that goes somewhere... off that same connector there are some other wires which i cannot remember what colors but I am not sure where they will go or if i even need them. I need some help. If i dont have enough information to be helped please let me know what else i need to explain. Thanks in advance.
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'86 sedan with 477,000 miles on the original engine and automatic transmission
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Are you trying to run a M46 relay on a AW71 transmission? Or did you install a M46 in your 91 wagon.
I have used both the '81-'84 and the '85-on M46 OD relays to run my M41s in 122s. I understand the relay/wiring on the J-type ODs, but I'm sure the automatic uses a totally different relay.
Paul
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Paul. I'm swapping the auto to the M46.
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'86 sedan with 477,000 miles on the original engine and automatic transmission
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You should have grabbed the wiring harness for the M46 relay too.
I'll take a look at the two wiring harness, and let you know if you can use the auto harness with the M46 relay.
Paul
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I did indeed grab the relay harness for the M46. It is the one that has the orange and blue wires that I was speaking of.
The white relay for the auto harness has different colors. Once I remove the auto trans and all the wiring from it, I should be able to just run the manual red relay and harness and splice the wiring going out from the relay to wherever it needs to go.. Thanks again.
--
'86 sedan with 477,000 miles on the original engine and automatic transmission
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I think you where following my post"overdrive Arrow(auto trans.)Change to M46 Green{5}". I was able to use the 85 240ti auto wiring harness But had to change the wiring in the connector to work with the M46. I didn't splice in wires,you can with a very small screw driver(like the set you would use on glasses)to push the lock tab down and pull out each wire. Then reinsert wires in correct location.
Even with the harness you pulled from the M46 donor you still may have to change the wiring around.The two wires I had to splice in where for the O.D.Button.
But you still need the wiring diagrams. If Paul can't help try to get Art at benstein@cleanflametrap.com for the diagrams. Lucid helped me and figured out what wires went where.
Charlie
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Forgot to say you do need the wiring for the M46 and work that into the connector.
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This is for another car, I a not trying to wire this into a 5 Light.This is for my 91 240.
It does indeed have the OD arow to let you know when engaged, but my intention is just how to wire in the OD relay from am 86 that was an M46.
And correction to my above statement... The 31/6 is where the Blue-Black striped wire is wired into. I am thinking this is the power. The yellow-red stripe wire goes to the OD light (arrow). These were the only wires coming off the white AW71 relay the rest of the wires were coming in. Its hard to explain without pictures but i will try and get some.
Basically to make an M46 work in an AW71 car you need the red relay and the harness correct?
I have everything else from the M46. All the wire harnesses and solenoids etc. I pulled it from the 86 and grabbed every wire harness that starts from the transmission to the shifter and from the transmission to the relay and from the relay to 2 different connectors... I just need to know how to wire this thing in and where,
Also do i need to do anything to the Reverse lockout switch or just remove it all together ? Thanks again,
--
'86 sedan with 477,000 miles on the original engine and automatic transmission
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"Basically to make an M46 work in an AW71 car you need the red relay and the harness correct?"
• I'm trying to come up with (maybe) a way to use the white OD relay with the M46. More on that later.
Question: Does red relay harness socket have slots for those 2 skinny terminals (an #85 and a third #87?
"Also do i need to do anything to the Reverse lockout switch or just remove it all together ?"
• I think you mean the "4th gear" switch. It's definitely required. But I'm not sure about wiring it yet. More on that later too.
--
Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.
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By the way, this is the individual that started this thread. I had xraybob let me start this thread under his name until I was a member. Now that that is squared away...
Question: Does red relay harness socket have slots for those 2 skinny terminals (an #85 and a third #87? Yes. Its a bit of an odd relay. It has more pins than that of the white relay.
What is that switch that is right by the automatic gear selector?
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Hi Cason, here is a copy of my note to Art Benstein about possibilities as I see them right now, comparing your Red M46 OD relay to the White OD relay in the '91, and your Red relay's Blue predecessor (the last one diagrammed in Bentley).
Hi Art,
As I see it now, there seems a good chance that his (Cason's) Red M46 relay will (almost) work with the AW70 relay socket and wiring, based on:
1) Red relay fits white socket pin locations and functions for 31, 15, and 86.
2) 87 is good too, if solenoid end is routed to M46 solenoid.
3) That leaves terminal 15, which connects to the 4th gear switch. At least I think so, based on how the Blue M46 relay is wired. Sadly, Bentley has no Red relay shown for 85' and up. Just the Blue for '86.
Only problem I see is with the 4th gear switch. The Blue relay "feeds" it via 85, but on the Red relay, terminal 15 is one of 2 skinny terminals oddly placed in opposite corners(upper left in pic, lower right is a 3rd 87). And I don't see how it could be physically used with the white relay socket.
I'm guessing (no diagrams) that the Red 15 performs like the Blue 15 -- preventing relay energizing unless 4th gear switch completes the ground. So my question of the moment is: Would running the White relay's "main" ground wire (31 black) thru the 4th gear switch have the same protective function of "no OD unless in 4th"?
Bruce
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Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.
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Bruce, this is what i found out looking at it...
White relay:
15= bl/blk goes to cluster 31/6 also gray coming from OD switch
86= gray coming from switch
87= white coming from solenoid (i think)
87a= y/r going to OD light
31= blk ground
Red relay:
15= bl goes to connector towards cluster also another bl to OD switch
86= brown OD switch
87= orange going to connector near cluster
87= yellow going to OD solenoid
87 (skinny)= nothing
85= red to single lead switch on top of tranny
31= blk ground
This is what i wrote down from visually inspecting today. Thank you guys for your persistence in helping me get this figured out.
*Also on the M46 there is a 2 wire lead on a switch on top of the tranny. This is a bl/yl wire and a black wire. I also snatched this harness and it lead to somewhere behind the instrument cluster on the 86 but i couldnt find where it ended so i cut it... Any ideas?
--
'86 sedan with 477,000 miles on the original engine and automatic transmission
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Red relay:
15= bl goes to connector towards cluster also another bl to OD switch (The thick blue wire is the 12V Switched power to the relay, the thin blue wire goes to the shifter OD button)
86= brown OD switch (goes to the shifter OD button-This activates the OD relay)
87= orange going to connector near cluster (That’s the OD light)
87= yellow going to OD solenoid (Yes)
87 (skinny)= nothing
85= red to single lead switch on top of tranny (the fourth gear lockout)
31= blk ground (yes)
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Thanks Paul. I was about to do something like that, so I used your work to relate the RED relay socket to the '91 AW70 wiring that will have to be re-pinned after M46 wires are removed from socket:
Red M46
relay socket:
15= (AW70) Blue-Black comes from Fuse 11, switched 12V. Gray to OD switch connector.
86= (AW70) Gray to OD switch
87=(AW70) Yellow-Red to cluster 34 to "Up Arrow" light.
(+12v on both sides of bulb will put light OFF. OK?)
??? Does '91 cluster have an unused spot for an "M46 On" light???
87=(AW70) White going to solenoid
87 (skinny)= nothing
85=(skinny)(AW70) Use existing wire from M46 harness to 4th gear switch
31= Same for both, blk ground (yes)
--
Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.
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"*Also on the M46 there is a 2 wire lead on a switch on top of the tranny. This is a bl/yl wire and a black wire. I also snatched this harness and it lead to somewhere behind the instrument cluster on the 86 but i couldnt find where it ended so i cut it... Any ideas?"
Yes, those 2 wires go to the Back-Up light switch on the top of the M46 (left rear corner) they (should) come from a 2-pin connector up near the shifter hole, under the tunnel carpeting. I told Cason about these wires a few minutes ago.
But it's getting confusing when I don't know where the 2 players are, relative to the removed M46 wiring that will be reconnected to the existing AW70 circuits.
Or where the 2 cars are relative to this operation.
Will check out your relay wire list for reconnecting and get back to you (and Cason).
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"What is that switch that is right by the automatic gear selector?"
Sorry. My last 240 was an '86 several years ago.
I'm blanking out on a switch "right by the gear selector".
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Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.
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there is a switch that is dang near connected to the gear selector. Its shaped kind of like a flat triangle and its slim and black. I dont know the color wires as it is not in front of me.
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its shaped kind of like a flat triangle and its slim and black
That's for back-up lights and starting safety (must be in Park or Neutral for starter to work).
Here's where I am on the relay swap.
Except for those skinny terminals on the Red M46 relay, it's the same as the White (AW70) relay. and the wiring on 4 of them is functionally the same on both transmissions -- which means you don't need to change any wires at the existing relay socket for these terminals:
15, Fused +12v in and Gray wire harness-routed to one side of shifter push-button on/off switch.
31, ground wire
87, 87a, Y-R to OD Arrow light (need to find an unused bulb for this as "OD On"), and White to AW solenoid (re-route to M46 solenoid at tranny)
86, Gray wire to other side of shifter witch.
More later (local "traffic")
--
Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.
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http://www.volvoclub.org.uk/faq/VolvoAW70M46Conversion/AW71M46Conversion.htm
see step 10:
Step 10 : Wire up the overdrive! This was cause for a little bit of apprehension, but it was completely unfounded. The wiring for the AW71 overdrive and the M46 overdrive is exactly the same! The exceptions being that you need to swap relays, and that you should really hook up the sensor on the M46 that tells the relay that you're in 4th gear. (You could leave it out, and drive around with an 8 speed, but I don't think the OD would last too long.) I wasn't able to snake this wire into place in the relay socket with the relay seated normally, so I had to make little jumper wires and lay the relay on it's side next to the socket. (yellow wires) and then I was able to attach the wire for the 4th gear switch (blue wire). You may be able to get the wire into the stock location if you have the center console apart and the relay-board out, but I wasn't about to go through that.
Does this seem correct? im not too sure...
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nevermind this is not for a 240..
i still need to know how to wire up the reverse and how to bypass the automatic safety switch... this was supposed to be a fairly easy project.. now im frustrated..
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With the M46 manual shift, the Neutral Safety Switch (NSS) is by-passed with a jumper in the wiring. I think it's under the carpeting on the tunnel, but I don't know just where. It will be a small 2-pin "plug" with 3 wires on one side (two BL-Y and a BLK) connected to a Blue and a BL-Y coming from the shifter switch. Those two wires are replaced by a Blue jumper wire on M46 cars (maybe with removed M46 wiring/),
As for the Back-Up lights, there is a mechanical switch in the M46 top cover at the left rear. It needs two wires plugged into it, a BL-Y (12V) and a Black (leading to B-U lights). Again, I can't say where those two wires originate, but probably under the carpet near the Auto shifter switch, where a 2-pin plug presently connects 2 wires (Y and Blk) to the shifter switch.
Regarding the relay wiring, I now see that the original Red relay is the way to go. That means using it's original relay socket, with M46 wires removed and replaced by AW70 wires. I'll be back here, if I make it before the EDIT window closes, or make a new post with wiring details...
--
Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.
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Ok so based on what you wrote would this image I made be correct?
Crap, how do i post a picture? I have the [IMG] link..
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Bruce,
Sorry to confuse you with the multiple Member names. Apparently i forgot to log off of my father in laws name when i used his computer that last post. To make it easy, every post with his name on this entire thread has been myself. Hope this helps.
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You're hired, Cason!
Aside from being inverted 180° from my habitual way of looking at terminal orientation, I don't see anything to find fault with in your diagrams.
Good luck with the hook up. Seems like you might use some of the 1991's existing wires, like at 15, 31, and '86. But since I can't visualize all the job realities I may be all wet there.
I'll be watching to see if I can help. You can always start a new thread, now that the relay wiring is defined.
--
Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.
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Art,
Is that a Solid Blue and a Blue/Yellow being jumped? I thought the Solid Yellow is jumped to Solid Blue? This would "complete" the safety circuit. I may be wrong though but your picture looks like a blue/yellow wire.
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Girly huh? lol
Thanks for the diagram. I just need to find where the switch is connected . I was thinking about splicing it right there at the switch but I figured I would pull the switch out whole and give it to someone who may need one.
One more question... On that switch there are 4 wires. Which one is the reverse light that needs to be wired into the M46 Reverse switch? see image...
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Yeah, it must be girly if it starts on a pink wire.
Whose image is that you posted?
However, that is the way to do it. Find the switch harness connectors under the carpet toward the left console as shown in my previous post. Once you remove the pizza-slice switch, you'll have two connectors with nothing in them. You need a jumper (like I showed you) in the starting circuit, and your backup switch harness from your M tranny, for the reverse lighting. Simple as (pizza) pie.
As to your question, the black wire is the run to the lights, and I believe the yellow provides the switch with +12.
http://cleanflametrap.com/neutsw.html
--
Art Benstein near Baltimore
If you can't be kind, at least have the decency to be vague.
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Whose image is that you posted?
I stole it from someones photobucket. You can view properties and check it out.
Thanks for the wiring help. This site is great and everyone seems to know what they are talking about. Very helpful.
I will update a new thread If I have any more problems. This thread is long and starting to confuse me lol.
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flat,triangle black near selector would be neutral safety switch.
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What you need is the diagram for that car.I only had the Start Inhibitor Sw. that I just soldered the 2 wires together or the engine wouldn't turn over. Again on mine the back up lights are separate and no changing. So I'm not any help to you. Like I said try Art or Lucid.
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