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electrical question - wiring a winch - front and rear

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Old 01-11-2013, 08:50 AM   #1
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electrical question - wiring a winch - front and rear

hello,

my winch came with a "fixed" positive 2/0 gauge wire coming out of it. I plan on adding a quick connect in its place so that i can move the winch from front to rear of my truck when i need to. I had planned on using 4/0 wire to run to the rear to accomodate voltage drop. My question is, what good would it to since i'd be cutting the stock 2/0 wire to put the quick connect and 4/0 on it? Would this small piece of 2/0 negate the 4/0 i'm using and heat up too quickly? i havent take the winch solenoid apart but i might be able to wire in the 4/0 all the way. The truck and winch folks told me to cut the wire, but it doesnt make much sense if i'm adding a thicker gauge in the mix.

my next question is on the ground cable. Does this have to be the same or greater gauge than the positive wire?

I will likely be grounding to the frame in the rear of the truck, then beefing the ground from the battery to the frame so i can ground it to the frame in the front as well.. not sure yet, might just ground directly to battery up front.

thoughts appreciated.
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Old 01-11-2013, 08:57 AM   #2
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You have the right idea about the grounds.

The short piece of 2/0 won't affect you. Just remember to to fuse for the 2/0 and not the 4/0.
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Old 01-11-2013, 08:57 AM   #3
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If the winch came with 2/0 wire, then going with 4/0 wire from the battery to the back won't hurt anything. If the 2/0 wire is sufficient to run the winch, it won't heat up any more than it normally would, the 4/0 wire upstream won't affect it.

I always make my grounds the same gauge as the supply.
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