Troubleshooting 7-Way Install on Trailer and Brake Wont Work

Question

Question:

I have a Ford F250 with the standard 7 pin socket. I am trying to figure out the wiring to hook it to my older gooseneck trailer. It is a Hillsboro with the 6 pin round plug. It does have brakes. I purchased a 6 foot extension with just bare wires on trailer side. I cannot seem to get it wired to match. I can get all lights to function but cannot get brakes to work correctly. Must have the brake wires in wrong terminals. Can you help? Thanks

asked by: Larry G

0

Expert Reply:

It definitely sounds like you have the brake output wire on your trailer not matched up with the wiring of your tow vehicle. Basically you will first need to determine which of the wires on your trailer wiring is for the brake output circuit. You can do this by tracing the wires from the 7-way to the brake assemblies, or you can try using a jumper wire from the positive post of a car battery to all of the wires of the trailer till you hear the brakes activate. You should hear a clicking type sound followed by a hum when they are activated.

I also attached a diagram that shows how 7-ways are normally wired.

expert reply by: Jameson C

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Answer 1

On your 2011 Sienna, you will first need a 4-way connector like part #118498. You will then need part #ETBC7 to convert the 4-way to a 4-way and 7-way trailer connector to tow your pop-up with brakes. To use the brake controller like part #90195 in…

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Answer 2

All of the available trailer wiring harness available for a 2011 Toyota Sienna, including the CURT wiring, #C56106, install by connecting in line with the tail light wiring connectors located behind each of the vehicle tail lights. A power wire will…

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Answer 3

The clicking sound you are hearing is likely from the 20 amp circuit breaker resetting after being tripped. This would indicate that something is shorting out and pulling too much amperage causing the breaker to trip. Check for any corrosion on the…

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Answer 4

Each of the trailer wiring harnesses that fit your 2011 Toyota Sienna are designed to store in your trunk/rear storage area when not in use - the Hopkins Vehicle Wiring Harness #HM11143495 and T-One Vehicle Wiring Harness #118498. You may be able to…

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Answer 5

When we test fit hitches, we take note of above ground height of the inside top of the receiver tube. When the size of the receiver (2 inch or 1-1/4 inch) and the thickness of the lip around the receiver (1/4 inch) is deducted, you get a good…

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Answer 6

I currently show 2 wiring harnesses for a 2011 Toyota Sienna. First, from CURT, we have the Circuit Protected T-Connector Vehicle Wiring Harness, #C56106. I have included a link to the installation instructions for you. The other is the Tow Ready…

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Answer 7

Circuit breakers like what come with the #ETBC7 will automatically reset after they have been tripped. There is no way to manually reset them.

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Answer 8

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 9

To connect your vehicle that has a 4-Way flat connector to your trailer that has a 7-Way connector, you will need to install a 7-Way on the rear of your vehicle. If you just want or need the tail light functions to operate on your trailer you will…

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Answer 10

You do need to make a direct wired battery connection for a powered wiring harness like #118498 because the small accessory 12V convenience outlets provided in vehicle do not have a high enough current rating to power the harness and all of the…

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Answer 11

For your 1991 GMC Suburban V1500 we have the Curt T-Connector Vehicle Wiring Harness #C55312 4-way flat connector that will plug and play into the factory connections. As there is not a 7-way connector with the factory connections you can use the…

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Answer 12

For your 2009 Lexus RX350, you will need the Universal Installation Kit for Trailer Brake Controllers, part #ETBC7. To make this work with your brake controller and your RX350 wiring, there are a few wiring connections you need to make. I have…

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Troubleshooting 7-Way Install on Trailer and Brake Wont Work

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