I have replaced the amp with a remanufactured one, and the actuator with a known good one - no soap. Today, I verified the cc switch works from information from another post. It shows fine to the amp connector. I get power to the amp connector as well.

I took out the instrument panel, hoping to find a bad connection on the speedo, thinking the signal was not getting to the amp, but no change.

A previous shop replaced the brake switch, thinking that was the problem.

Brake lights function ok.


I'm not sure where to go now. I don't have schematics or wiring diagram. If any one can help, I'd really appreciate it - my 120 mile commute is in need of cruise control!

__________________
1984 300Sd 210k

Former cars:
1984 300D 445k (!!) (Strider) Original (and not rebuilt) engine and transmission. Currently running on V80 ( 80% vegetable oil, 20% petroleum products). Actually not, taking a WVO break.
1993 300d 2.5 275k. Current 120/day commuter
1981 300SD 188k (Hans) Killed by a deer

Have you read through these suggestions?

http://gdl-online.com/testproc.html

Chris

__________________
1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss

Yes, thanks. I found them and ran the tests. I then called George on the phone and he graciously agreed to help me troubleshoot.

__________________
1984 300Sd 210k

Former cars:
1984 300D 445k (!!) (Strider) Original (and not rebuilt) engine and transmission. Currently running on V80 ( 80% vegetable oil, 20% petroleum products). Actually not, taking a WVO break.
1993 300d 2.5 275k. Current 120/day commuter
1981 300SD 188k (Hans) Killed by a deer

So did you get it working? I need to figure mine out still.

Chris

__________________
1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss

George hasn't gotten back to me yet. I"ll let you know what I find.

__________________
1984 300Sd 210k

Former cars:
1984 300D 445k (!!) (Strider) Original (and not rebuilt) engine and transmission. Currently running on V80 ( 80% vegetable oil, 20% petroleum products). Actually not, taking a WVO break.
1993 300d 2.5 275k. Current 120/day commuter
1981 300SD 188k (Hans) Killed by a deer