Installing a Trailer Brake Controller From Scratch on a 1970 GMC C30 Pickup

Question

Question:

Im putting a CM brand flatbed on my 1970 GMC C30 pickup. The flatbed is wired for a 7 way connector, and I would like to add a trailer brake controller so I can use the pickup to pull my car trailer with electric brakes. What do I need for wiring so I can use a Tekonsha Prodigy P2 trailer brake controller?

asked by: Justin

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Expert Reply:

If you do not already have a 4-Way flat connector at the rear of your 1970 GMC C30 then you will want to start off by installing the Tekonsha 4-Pole Hardware Kit # 18252. This will simply splice into your current light functions. I have attached a sample installation video for you to follow.

The next step is to install the Universal Installation Kit # ETBC7. This comes with everything that you will need to give yourself a fully functioning 7-Way. Attached is a video of this kit being installed along with the Tekonsha Prodigy P3 # 90195. You can use the exact same steps to install the Tekonsha Prodigy P2 # 90885 as they are identical in their installation process.

I have also attached a few helpful articles that you can reference for the installation.

expert reply by: Jon G

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Answer 1

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 2

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 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

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 5

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 6

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 7

Hey Donald, the best Blue Ox weight distribution would be the pat #BXW0550 as it has a perfect tongue weight range for your 450 lb tongue weight trailer.

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Answer 8

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 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

Hello Dan, I can definitely help with this. It is completely normal for the Curt TriFlex brake Controller #C24VV to show the current gain setting when the brakes are applied, or when the manual override is pressed. It sounds like you have the gain…

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Answer 11

By all accounts the Curt Spectrum Trailer Brake Controller #C51170 works well and is easy to use and install on most vehicles. It is a brand new item so not a lot of feedback has come in on it. I did learn a few things though after speaking with our…

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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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