Hi,

I bought an orphaned 245 in April that had been in storage for a long time. It had a lot of problems, but I was able to drive it home and the cruise worked well on the trip.

I've been working on the car over the summer and it's now inspected and on the road but somehow the cruise didn't survive the make-over. I'm suspecting latero genesis. If I understand the term correctly it means I may have screwed it up by fixing other things.

I re-wired the tailgate, which was a mess, bypassing the hinge and replacing the grounds. I know the brake lights are part of the system, but all 3 are working well as does the rest of the back end.

I had the cluster out. The lens was cracked so I transferred everything into a new box, deleting the service reminder and jumping the temp fakir at the same time. The yellow wire has been firmly re-attached to the double spade. There are no codes showing. The speedo and odo are functioning.

I replaced the master cylinder after a lot of brake work and then monkeyed with the brake pedal switch, mistaking it for the brake light switch. I've reset it so that the wires show continuity with the pedal up and open when depressed. There is also continuity between the output wire and ground, and the switch passes the blow through test. That seems to be as it should.

While I was toying with the switch a 10 inch length of wiring harness fell out from around the steering column. Four wires, blue/yellow, white, green and red, dead ending at a female receptacle that looks like it would accept a relay. The colors don't correspond to the wiring diagram for the cruise, so it's probably irrelevant. The other end disappears into the monster harness behind the cluster.

I've come to the point in Bentley's troubleshooting where he says to make electrical tests on the components, hence some questions.

His diagram p. 360-15 shows a black ground from the control unit. Where might that end up ? I had the center dash apart so if it's in there I may have missed it.

Also, his diagram of the stalk switch shows 2 blue wires, a white and a blue/red. On mine one of the blue wires is a blue/ yellow. Maybe a typo. Is the blue he's showing at terminal 1 a power lead, and should I have 12 volts there ?
I haven't removed the stalk to check it, but I do have a clean fuse at #12 and power from it.

And thirdly, is there a way to jump the vacuum pump or test it ? I should mention that the vacuum lines all seem to be sound. The rubber is supple and without cracks. I've connected a hose to the servo, and there's movement at the gas pedal when I suck on it.

Any other ideas ? I have a 91 with an operating cruise and I can swap parts, but I'd rather leave that as a last resort.

Thanks, Peter