How to Connect a Tekonsha Prodigy P3 Brake Controller to a 2005 GMC C4500 Topkick

Question

Question:

I have a Tekonsha P3 brake controller I removed from my other truck. I now have a 2005 GMC C4500 Topkick I would like to install it in. Do they make a wiring harness for this truck?

asked by: Wayne

0

Expert Reply:

You can install your Tekonsha Prodigy P3 # 90195 in your 2005 GMC C4500 Topkick, but, your vehicle does not have a brake controller port, so there is no adapter. But, never fear, there is a way to use your Prodigy with your truck. The P3 will need to be hardwired into your truck using a 4 & 7-Way Installation Kit, # ETBC7.

Normally this would require the installation of a 4-way wiring harness first, which would then be plugged into the # ETBC7. But, since there is not a 4-Way wiring harness for the Topkick, you will need to clip off the 4-way plug in the kit and splice the wires directly into the tail lights.

Brown - tail light circuit
Green - right turn/brake
Yellow - left turn/brake
White - ground

The installation kit comes with 25 feet of wire, but you may need additional wire, # 10-2-1, and a circuit tester like # PTW2993 to find the correct wires. I've attached a link to the installation instructions for the # ETBC7 kit and the P3 for your convenience.

If you left them in your old truck, you may also need to purchase the P3 Plug-In Harness # 20127, and the Replacement Mounting Bracket Kit # TK5906.

expert reply by: Amy W

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Answer 1

For your 2007 Chevy Kodiak C4500 Bus I recommend the Curt Adjustable Trailer Hitch Receiver - 18"-51" Wide - 2" Drop - Class III - 2" Item #C13701. This hitch is a universal hitch for RVs. It is bolt on or weld on and fits frames…

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Answer 2

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 3

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 4

If you just need a 4-pin to 7-pin trailer wiring adapter, then you can use part #C57672. This will plug into the 4-pin trailer connector on your brother's vehicle and give him the 7-pin socket for the trailer. Keep in mind, this will only give…

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Answer 5

If you have a vehicle specific wiring harness for a brake controller then that would indicate that you have a factory tow package and subsequently would already have a 7-way at the back of your vehicle. The universal 7-way connector #ETBC7 is meant…

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Answer 6

You do have the option to utilize the air brakes on your 2023 Freightliner Cascadia to control electric trailer brakes using the Hayes Air Actuated Trailer Brake Controller, part #HA100400C. However, we mostly recommend just using an electric brake…

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Answer 7

Hey Antoine, so the two kits you mentioned are actually really similar and honestly I would go with the part #ETBC7 if I were you. The #ETBC7L is basically the same thing minus a couple wires and breakers so you may as well get the kit that has…

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Answer 8

I do have a solution for your 2024 Kia Telluride that has the LED taillights that does allow it to have both a 4-way and 7-way plus install a brake controller but it is not with the #TK74CR which does not work for you based on the LED taillights.…

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Answer 9

Sure thing, I will go ahead and list out what you need for your 2023 Kia Sportage to add a 7-way for a brake controller so you can tow with the Curt Trailer Hitch Receiver #C94WR: - T-Connector Vehicle Wiring Harness with 4-Way Flat Trailer Connector…

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Answer 10

You're right, the mounting bracket is unique (in a good way) for the Curt TriFlex NEXT Trailer Brake Controller #C24VV. The bracket is smaller and all you do is put the included adhesive tape on the bracket and stick it wherever you like under…

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Answer 11

The Redarc Tow-Pro Liberty #RED24FR is the way to go over the Elite #RED44FR as you get the nicer functions of the Elite at a lower price. The Elite has the ability to be the more preferred proportional style of controller as well as a time-delayed…

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Answer 12

For your 2024 Hyunda Santa Cruz we have the Curt 7-way kit part #C68JR that is a confirmed fit. This installs by plugging into a factory wiring connector on your vehicle which means a really easy install that doesn't require any splicing.

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How to Connect a Tekonsha Prodigy P3 Brake Controller to a 2005 GMC C4500 Topkick

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