How To Determine the Cold Side of the Stop Light Switch

Question

Question:

I want to know if you can be sure which one is the cold side, on a kia sorento 2012 v6 ex, i think is the yellow wire but. I just want to be sure, that i do no take the hot side. Thanks

asked by: Maxime

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Expert Reply:

When installing a brake controller, the only way to determine the cold side of the stop light switch on any vehicle, including your 2012 Kia Sorento, is to use a circuit tester such as the very handy Cordless Circuit Tester # PTW2979 and find the wire that only has voltage when you press the brake pedal. This is quite easy to do you will not have any issues whatsoever.

I have also added links to a couple help articles on brake controller installation I strongly recommend checking out.

expert reply by: Kyle S

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Answer 1

The brake controller I recommend for your 2017 Sorento is the P3, part #90195. This is one of our most popular because it is easy to set up and operate. Since there is no plug-in adapter available for your Sorento you will have to do some additional…

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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 your 2020 Kia Sorento has the factory tow package, there will be a tail light wiring connector behind the rear tire of the driver side, on the outside of the frame rail. As shown in the attached photos, an underbody cover will need to be removed…

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Answer 5

In order to tell if you have a factory tow package on your 2022 Kia Sorento, there will be tail light wiring connectors behind the rear driver's side tire. This will be on the exterior of the frame rail. In order to see these ports, you will have…

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Answer 6

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 7

Yes it does. I'm happy to confirm for you that the etrailer Trailer Hitch Receiver #e28AR does indeed fit your 2023 Kia Sorento PHEV (plug-in hybrid).

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Answer 8

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 9

The first thing you will need for your 1999 D250 is a 4-way. The Curt T-Connector Vehicle Wiring Harness #C55317 plugs into the connection points behind your rear bumper and will allow you to power your trailer's signal lights. Once the 4-way is…

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Answer 10

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 11

I have not heard of the T-One Vehicle Wiring Harness #TK26FR having a fire issue with your 2023 Kia Sorento Hybrid. Tekonsha has always had the better modules which are not as susceptible to water damage. I do believe the issues the Sorento had were…

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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 Determine the Cold Side of the Stop Light Switch

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