Alright...last week I posted a question about the charging system on a 1968 firebird. Since then I have removed the gauge cluster to access the wiring harness, replaced the ignition switch and split the wiring harness under the hood....nothing is wrong that I can tell. Still there is no charge. Just to be sure I full feilded the alternator and it charges 30 amps. when running not full feilded it has 10 amps drawn. This is a big issue as this old ride has lots of uber power using motors....(the starter is absolutly massive and the power windows consume enough juice to brown out your average rural town). last time this chearging issue happened I jiggled the wires behind the ignition switch and it began to work.....this told me there was a bad connection somewhere....so I began looking....first I checked for voltage at the terminals on the switch's back....all have juice save for the following the port marked "Sel" which goes to the starter selonoid...(it works only when cranking as it should), the port makred "ground"....(I don't think that should have juice)...and the ports marked "Key+" and "Key-". According to my wireing diagram "key-" heads toward the back of the car and I am not sure what it does, but I am sure that it has little to do with the charging system. as for "key+" I have no idea what it goes to...it heads forward to the firewall connector port and from there ....its a mystery....I think this is the issue though as it never has juice at it cranking, running or in the accessory position. Can anyone tell me what the hell "key+" does??? This is driving me to drinkin as I cannot find what is wrong with this car...the regulator is good (brand new), the alternator is good, the battery is good (brand new) and the wiring is good (all new soldered and connectiveity checked connections) and the Ammeter works....please help....after 15 hours of checking stuff I have exhausted my list of what to look for and I am really stuck on this one
PS: the brick has no charging issues...at all

Do you have a shop manuel for that model car? If so it would have the info your looking for. If you are going to keep the car around I would suggest you spend the 20 or 30 bucks they bring, lots of good info in there ,that will keep you away from AA meetings.
Good Luck
Poolman

I do have those...I have one by chiltons and one by Motors and a wireing diagram....this was my first car i bought it when i was 15 and over the past 2 years have really made it a proper "resto-mod" I am 99% done with it now and this issue is killing me...the factory wiring diagram is all but impossible to translate when it changes pages aka goes through the bulkhead....it is like a connect the dots with the dots either mislabled or in a location that makes no logical sense...not to mention that it is printed in like #7 font.

What is meant by a shop manual is the real factory service manual for your specific model from GM, not Chilton's, Motor's, etc.

Oh well in that case, I don't have that....I have yet to find a repro of one, and an original is a collectors piece...aka redickulously priced...i think they are sold next to the original batteies that sell for $1500-2000 a piece and no longer work.

I wonder if this reprint is worth $18.


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Art Benstein near Baltimore

That's the one I own...it is difficult to read...it is broken into several "sections" and when the wireing travels from one section to the other and from one page to the other...it is very hard to tell what is going on, as wire colors changem and leter designations seem random in relation to connectors and plugs....All i need to know is what "Key+" does...

Try to find one thru someone like Hemmings Motor News, there useally are people there who repop these manuals. The one for my 66 Ford ran a little under 60 bucks.
Hope that helps
Poolman

I will look there as soon as I can. thanks