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Question Was Asked By - jim p
Color of Stoplight Switch Wire on 1997 Chevrolet CK3500 for Tekonsha Voyager, Part # 39510 Install
Question:
ok first installed a redline,,,this is on a 1997 chevy ck3500 all wires were easy but when it came to the stop light switch wire, found that trucks factory white wire at switch would be hot with pedal applied,so tried trailer brakes lock up anyway it triedto adjust, so now have tekonsha voager mod. and does same thing, manuel lever never worked on either, both units stayed green,,,,,so thinking that im on wrong wire at brake light switch, any ideas on the color of the factory wire i should use on my 1997 ck3500,,,,,about to pull hair out,,HELP,,,,,,,,,,
asked by: jim p
Expert Reply:
You might have the incorrect stoplight switch wire. In GM trucks manufactured in the 1990s, it can be difficult to access the correct wire. The wire can also be accessed in the main harness located under the steering column. The wire needed is either light blue or white. You will have to use a circuit tester, such as part # 40376 to probe the wires until you locate the one that only shows power when the brake is applied. When are the brakes locking up? If it is occurring immediately upon attaching the trailer, and if your vehicle or trailer uses a 6-way connector, the connector might be wired incorrectly. There are two accepted ways or wiring a 6-way connector, one uses the center pin as the 12 Volt lead, the other uses that pin as the brake output. If the connector on the vehicle is wired one way, and the connector on the truck is wired the other, the trailer brakes will lock immediately when the trailer is plugged in.
expert reply by: Mike L
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