1993 OBS Speedometer and Cruise Control wiring

[92 6.0]

Ok I have verified the switch is working. Its getting a signal from the vss. My question is I cant seem to find which wire is suppose to be ground for the cruise module. Every wire seems to have voltage at one point or another. The only one I think could be the ground is a black with white stripe. Never mind found a pretty good diagram in pdf I have if anyone needs it.

[RedHeartbeat]

black and white wire is ground. You can try taking the cover off the cruise unit and see if you have corrosion on any of the contacts but it sounds like your box may be dead. Salvage yard units are cheap replacements but be sure you get a warranty that its not a dead unit.

Store the pdf file up on photobucket or here for future reference if you would.

[92 6.0]

How do I store the pdf file here? I found that for some reason the ground was getting voltage in it dont know how but it was. I just cut it and grounded under the hood now it works great.

[GasGuzzler]

How do I store the pdf file here? I found that for some reason the ground was getting voltage in it dont know how but it was. I just cut it and grounded under the hood now it works great.

Sounds like what is called "open circuit voltage". Since the component that this wire is supposed to ground is powered you get a test light to light connected to ground and this wire. Ground that wire and retest. If I'm wrong (doubtful) the worst thing that will happen is a blown fuse.