What Wire Gauge Should be Used for Electric Trailer Brakes?

Question

Question:

Im looking to run wires for a trailer brake on a 2014 f150 crew cab not tow package ready. Do I need 10 gauge wire, or is 12 gauge sufficient for this application? I have a 7 thousand pound carhauler that I will be loading with a RZR and 1-2 four wheelers, brakes on 1 axle. Thanks

asked by: Nathan J

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Expert Reply:

It would be fine to use either 12 gauge wire # 12-2-1 or 10 gauge wire # 10-1-1. However, we generally recommend using the 10 gauge wire for running the 12V power to your electric brake to avoid the wire potentially overheating.

expert reply by: Kyle S

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Answer 1

That's a very good question, we tend to be extra cautious and say to use 10 gauge wire because that would be more than enough. When you get into longer trailers that will end up using a lot of wire the heavier gauge wire becomes more necessary.…

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Answer 2

It sounds like you have a 7-way blade connector on your boat trailer as that is a very common connector on boat styles. This connector has 6 pins around the outside of the connector and a center pin for a total of 7. Part #A7WCB would be what a 7-way…

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Answer 3

When you order 30 feet of #12-2-1 we cut it to length in our own warehouse so it's going to be one 30 foot wire and not several shorter wires cut into pieces.

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Answer 4

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 5

Hello Merle, thanks for reaching out. The Hydrastar Disc Brake Kit #HSE7K-T1 you were looking at is for a standard 7K axle. The hubs use the #25580 inner bearing, #14125A outer bearing and #GS-2250DL (2.25" ID, 3.376" OD) seal. Most 6K…

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Answer 6

Hello Rick, thanks for reaching out. The 7,000 lb axle on your 2021 Grand Design Solitude 310GKR uses a standard bearing combination, so finding compatible disc brakes will be easy. Here is what I recommend: - DeeMaxx Disc Brake Kit - 13"…

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Answer 7

Hello Mike. It sounds like you are wanting to add electric brakes to your boat trailer that currently has no brakes. This is possible, but you will first need to make sure that your axle is equipped with a brake flange at the base of the spindle. The…

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Answer 8

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 9

Great question, William! The Karrier ST225/75R15 #KE63KV is a KR35 while the Karrier ST225/75R15 #AM10303 is a KR03 according to Kenda. There is a slight variation in the tread pattern and from what Kenda says about them it looks like the KR03 is…

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Answer 10

Hi Casey; 14 gauge wire like the #SWC4332-1 will work well for 26' car trailer with those side marker and rear marker lights.

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What Wire Gauge Should be Used for Electric Trailer Brakes?

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