Recommended Hayes Trailer Brake Controller Wiring Harness for 2003 GMC Sierra SLT with Tow Package

Question

Question:

for 2003 SLT GMC pickup, controller HA81725, which adapter wiring connector do I need to plug into terminal box located left of steering column near floor. Is that all thats needed? truck already has tow package.

asked by: Virgil R

1

Helpful Expert Reply:

For your Hayes Syncronizer Trailer Brake Controller # HA81725 on your 2003 GMC pickup with tow package, you will want wiring adapter # HA81780-HBC. This will plug into your junction box beneath your vehicle's dash. That is all you will need as you stated.

expert reply by: Jason S

1

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Answer 1

Your Hayes Syncronizer Trailer Brake Controller - 1 to 2 Axles - Time Delayed #HA81725 is confirmed to fit your 2017 GMC Sierra 1500 using the custom wiring harness #HA81798-HBC. This adapter plugs into the port that is built into the electric…

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Answer 2

That is not normal. The Hayes Syncronizer Trailer Brake Controller - 1 to 2 Axles - Time Delayed #HA81725 should not give off any smell and should not be activating the brakes enough to cause smell if installed and adjusted properly. I've…

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Answer 3

You'd have to jack your trailer up by the frame with a bottle jack like the #ALL620471 since the TrailerLegs Tire Saver Stands #326-TRLLG-4 require your trailer to have standard axles. The part #ALL620471 also doubles as a jack stand too for if…

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Answer 4

For sag from towing a trailer the best recommendation I can make is actually a weight distribution system. Suspension enhancement will help level your truck while towing. But the advantage to a weight distribution system is that it levels the vehicle…

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Answer 5

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 6

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 7

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 8

Actually, the P3 now has the upgraded axis accelerometer like the P2. The Tekonsha P3 Trailer Brake Controller #90195, will work with both electric over hydraulic brakes on the trailer as well as electric brakes. It has a menu option on the display…

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Answer 9

The OEM prep package consists of 4 "pucks" in the bed of the truck that will allow you to drop in puck style hitches for easy installation and removal, that gives you a completely clear bed when not in use. The B&W Companion OEM 5th…

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Answer 10

The best brake controller option to go with is one that activates the brakes proportionally instead of time delayed. A proportional brake controller will activate the trailer brakes at the same time and with the same intensity as the tow vehicle…

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Answer 11

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 12

For your 2024 Chevy Silverado 1500 I recommend the Redarc Tow Pro Elite #RED63RR. You can use it along with the Plug in Adapter #3064-P for a plug and play install, since you already have the factory tow package. The Redarc controller is going to be…

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Recommended Hayes Trailer Brake Controller Wiring Harness for 2003 GMC Sierra SLT with Tow Package

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