Cruise control...this worked for me!

My '83 had a non-working tach and cruise. I used the "cigarette butt" trick (do a search) and the tach worked.

I also did the BB trick (actually used a golf tee) on the EGR valve.

Between these two fixes, both started working. Maybe I just chased a gremlin away, maybe they're somewhat related. The tach is starting to go on/off.

Also, the pass. rear window doesn't work, and the passenger rear stopped also. Tore the panel off the door, got frustrated, another "work in progress".

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83 SD 143 K miles
93 Grand Caravan 130K miles
92 Buick Regal (winter car)