[wrightb]

Hello, I am a first time poster as well as a 1st time plow user. I have recently bought a used 8.5' pro plow unimount. The unit came off of an 88 F350. I have a 96 F 250 Powerstroke. I have the plow harness hooked up and everytime I go to start my truck, it will turn over but will not start. The harness is somehow sucking amps from my battery. I unhook the relay from the battery charge it up after a half day or so and it fires up. Hook up the motor relay to the battery again and it does the same thing. The plow harness is used, I have not hooked up the lighting harness yet. Help I am at a dead end. Thanks in advance.

 

[B&B]

Do you have the power wire in the control harness connected to a power sours in the fuse panel that's ONLY hot with the ignition on (like it should be)? This will discharge the battery if the control is left in the float position with the plow attached..

If your sure it is wired correctly.. then it sounds like the motor relay is shorted out internally, which will cause enough of a power draw to discharge the battery.....

 

[wrightb]

I didn't even have the controller hooked up yet or the ignition key wire. I just went to move my truck out of the garage and it wouldn't start with everything hooked up the way it was supposed to be.

 

[wrightb]

I also didn't have the plow hooked up. Just working on the wiring in my garage.

 

[Crash935]

Sonds like you may have the battery cables for the plow hooked up wrong someplace since it sounds like thats all you have hooked up so far.