I installed my new CB the other night with some help from my brother. He found a black wire with white stripes in the fuse box to use as a ground wire, and plugged the live side into an empty fuse slot to draw power. All looked good, and the CB came on no problem, but when we clicked the transmit key, we heard some kind of relay click in the car.

We decided that despite the continuity reading on the multi-meter, what we thought was a ground-wire was not in fact a ground wire. We moved the ground and got no more relay clicks when pushing transmit, so the CB is working fine to all appearances.

BUT, now my service engine light is on... any thoughts? Coincidence? (doesn't seem likely)

Thanks.

Hedron