Last night I hooked up a hitch to a Chevy S-10 pu which went suprisingly well. I then connected the trailer lights to the truck's wiring. It did not have a harness on the truck, so we connected the appropriate wires. The lights work fine, but now the truck doesn't start. We disconnected the harness wire by wire to trouble shoot, and the problem is the ground wire. With the ground wire disconnected, the truck starts and runs fine, reconnect the ground wire, and it doesn't start. It just cranks and cranks, but never starts. Also check engine light comes on. Anybody else have similar issues or might know the fix to this?


Thanks

Carl, I stored this trailer lights doc off a while ago, maybe it can help. If not the next search on trailer lights might use it. good luck.
The quick fix is to load your boat crooked, that keeps the cars a good distance from you :tooth:

I tow with a 2000 S-10. My trilaer gorund wire is coonected via a screw to the frame. I drilled the hole and used a self-tapping screw. I have never had this problem.

maybe you tapped into the fuel pump harness somewhear ?

I just rigged up the wires on my S-10..........If I remember correctly there are 2 ground wires. One brown and the other white. Maybe the wiring for your trailer is not like this?? I think the directionals were yellow and green....
The brown wire is the ground not the white one!!!!! I didn't even hook up the white wire............and have not had a problem. The wrong wiring could mean that the juice is being shorted to the chassis.

if its not to late , you can buy a harness that plugs right into the original tail light plugs , no wire splicing , alot less chance for corrision you can get them at most good car/truck accessory stores. i bought one for my last truck took 15 min. to install , no chance of crossing wires . 4 years old now and still works great , the new truck i just bought came pre wired with a plug and cap right from the factory .good luck