2013 SR5 Rear Winch Power Supply

[waterbill]

We're pulling a 17' boat with an power winch on the trailer. Is there a suitable ampacity supply at the back of the vehicle? If not, how about running an 8 gage wire all the way up to the positive battery post with a 40 amp circuit breaker? Any help will be appreciated.

 

[fourwd1]

You're going to have to run your own wiring, and depending on the winch, you may need heavier than 8 ga.

 

[TechWrench]

We're pulling a 17' boat with an power winch on the trailer. Is there a suitable ampacity supply at the back of the vehicle? If not, how about running an 8 gage wire all the way up to the positive battery post with a 40 amp circuit breaker? Any help will be appreciated.

Why no just mount a battery on the front of the boat trailer frame and connect the winch directly to it.

 

[waterbill]

Thanks for the replies. I did remove the 20 feet of 8 Ga. wire that went to the battery of our Chevy Blazer when we bought the 4Runner last week. It was just right for our little winch. I was just hoping I didn't have to start messing with a brand new car right away. The battery on the trailer frame idea sounds good though. Just use the trolling motor Batt. and then put it in the boat, once launched. This SUV came with a 4 pin and a 7 pin connector. Not being familiar with a 7 pin, I wondered if any of those terminals could handle 30 amps. I guess not.

 

[TechWrench]

Thanks for the replies. I did remove the 20 feet of 8 Ga. wire that went to the battery of our Chevy Blazer when we bought the 4Runner last week. It was just right for our little winch. I was just hoping I didn't have to start messing with a brand new car right away. The battery on the trailer frame idea sounds good though. Just use the trolling motor Batt. and then put it in the boat, once launched. This SUV came with a 4 pin and a 7 pin connector. Not being familiar with a 7 pin, I wondered if any of those terminals could handle 30 amps. I guess not.

The heaviest circuit on the 7-pin connector would be the one supplying power to the electric brake system on the trailer (if the trailer is equiped with them), but I don't know off hand what amperage it is rated for. As for the battery on the boat trailer frame. If you are thinking about using the battery on the boat powering the trolling motor, instead of moving the battery back and forth between the boat and trailer, what about using some type of plug-in quick disconnect and a long (possibly coil type) set of wires from the winch to the battery. This way you could still use the boat battery, but not have to physically move it back and forth.

 

[shadow247]

From what I can gather, the trailer brake circuit may be capable of handling your 30 amp load from the winch. The only issue is that the circuit only receives power when the brake controller is telling it to. It may be possible to provide power full time, but running a separate 8 gauge wire under the truck will be your best bet. This way you can run your trucks engine to provide full power to the winch. It seems silly to use your trolling motor battery when that could possibly be dead after a long day of fishing and trolling around.