heres one for all you dodge guru's. this truck is acting all crazy. when you start the truck, the left blinker light comes on by itself, doesn't blink. but when you turn the left blinker on, it makes the alternator start overcharging like at 18 volts. sometimes the left headlight flickers on and off. the alternator lugs the engine down when it is overcharging like crazy, the check engine light comes on when you turn the lights on and when you turn the lights off it goes off. the right blinker makes the alt overcharge-normal, overcharge-normal. like in sequence with the blinker. the overdrive quits working. and the speedometer and fuel guage is intermittant. and it explodes batteries too!!! NEED HELP!!!!!!!!!

 

What truck is this in? Both trucks in your sig are Fummins rigs.

 

Did you keep the Ford alternator/regulator, or try to retrofit the Dodge electrics ??

Also, un-screw the fuse-block from the floor and drag it out where you can see the big wad of wires.

There is a much-too-small TAN wire that feeds the head-light switch; it gets HOT, melts it's way out of the insulation, and eventually melts itself into some of the other wires, causing all sorts of weird happenings.

The problem IS with one of the Fords, right ???

 

Dodges never have electrical problems.. nope.. no way.

Sounds like the PCM is acting up (if it has one) 92-93

 

ya, im sorry, i forgot to put that it is a 92 dodge cummins automatic all factory stuff. i have alredy been through the ford headlight switch issues... but this is on a dodge. oh, and the horn won't stop honking and the windshield wipers run all the time

 

Check the main body ground, it's on the core support right in front of the battery.

 

we have had problems with that one before, but we got it hooked up good now. this one is really stumping me. i think i will try to get a new computer maybe?

 

Nope, it's not the PCM. You have a ground issue. Try a ground strap from the firewall to the engine.

 

ok!!! i fixed it thank u so much. i grounded the engine to the cab. fixed it. my blinker problem was the little round relay thingy was messed up, i guess 18 volts burned it up. any ways thanks a lot. its working perfect now. the windshield wipers still jacked up. i just un hooked them. i think 18 volts burned the windshield wiper motor up.

 

and the horn wont stop honking because i punched the steering wheel... i unhooked the horn too