Trailer Brakes Will Not Work and 2006 Chevy Silverado Lights Malfunction w/Curt Brake Controller

Question

Question:

I have 2006 silverado. It had wiring under dash. I bought curt C74VV and ordered harness adapter from you. I cannot get it to work. When first tried it locked up brakes. Now it worked well when tested. Approx 5 min later I have no lights. It doesnt work with trailer and no light without. I have cut connector off I need mating wiring with out connector.

asked by: Robert D

0

Expert Reply:

It sounds like the red wire in the wiring harness # C51352 was not in the correct place. Take a look at the picture I have included and make sure that the wires in your harness are in the same places. This is the end that plugs into the truck.

It needs to plug in at the junction box under the dash, to the left. It will plug into the spot that is on the top row, second from the left.

The wire functions are white for ground, black for 12 volt power, blue for output to trailer brakes, and red for input from brake switch.

If you decide to hardwire in the controller then the white wire should be grounded to the negative battery terminal and black should go to the positive battery terminal via a 20 or 30 amp circuit breaker (# PK54520 or # PK54530 respectively). But those functions might still work on the connector and will save you a lot of time and effort if you can just use them.

The blue wire will need to run all the way back to the 7-Way and attach in the 7 o'clock position on the back of the 7-Way. You will likely need about 20 feet of wire # 10-1-1 sold in 1-foot increments.

The red wire connects to the cold side of the brake switch. You will need a circuit tester such as # PTW2993 to probe the brake switch wires located above the brake pedal. You need the wire that only has power when the brake pedal is pressed. If it has power with the headlights or turn signals on, then it is not the correct wire. You can use a quick splice connector, # SWC501746-1, to make the connection.

expert reply by: Michael H

0

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Answer 1

We do have a plug-in adapter for your 2006 GMC Sierra, but the Curt #C51451 that you referenced is a fit for Chevy Silverado and GMC Sierra pickups starting in 2014. For your 2006 Sierra you want the Curt #C51352 instead. This adapter will plug into…

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Answer 2

If you check out the attached instructions for the Curt TriFlex Trailer Brake Controller #C24VV you can see that the OL code you are getting means that there is an "Overloaded output circuit, trailer brake system fault". Whichever…

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Answer 3

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 4

The harness that is used to install a brake controller like the Tekonsha P3 #90885, like the #3015-P that you're currently using, is going to be vehicle specific and not trailer specific. The #3015-P is the correct harness for your 2003 GMC…

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Answer 5

Hey Joseph, so it sounds like there is an issue with the brake switch circuit which is what actually tells the brakes to activate. This should be a red wire coming out of the controller, and you're going to want to make sure that it is connected…

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Answer 6

If it's just a 4-Way Flat connector like the T-On #118786 then I would be surprised to see that much power being pulled to the back of your 2020 Jeep Wrangler Unlimited, but if you have a 7-Way like what we find with the Wiring Kit #ETBC7 then…

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Answer 7

Hey Don, as long as you have a 7-way on your truck then you can use the Curt Spectrum #C51170. The 7-way being already there means all of the necessary wiring to use this brake controller has been run so you'll be all set! Let me know below if…

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Answer 8

Yes the correct brake controller install harness for your 2005 Chevy Tahoe is the part #C51352 to install the Curt Spectrum #C51170 that you mentioned.

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Answer 9

Yes, the Aluminum Sendel Series T07 Black Machined Trailer Wheel #AM97XR will work with your 205/75R15 tires. The 205/75R15 tire will fit rim widths of 5-inch, 5-1/2-inch, 6-inch and 6-1/2-inch and the #AM97XR are 6-inch. From what I can find on the…

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Answer 10

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 11

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 12

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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Trailer Brakes Will Not Work and 2006 Chevy Silverado Lights Malfunction w/Curt Brake Controller

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