i have a 2004 chevy silverado and can not figure out why the driving lights will not light up on my trailer. The lights work with my other truck so I know it is not the trailer. any one have any ideas what it might be and how to fix it in a hurry
i have checked the fuses and they seem to be fine
2007-08-26 11:10:44 · 6 answers · asked by dave p 1 in Cars & Transportation ➔ Maintenance & Repairs
The only thing I can tell you without being able to see it is, there are a couple of fuses in the fuse block under the hood just for your trailer lights. If they check good, it would have to be in the wiring harness that the trailer wiring plugs into.
2007-08-26 11:17:23 · answer #1 · answered by master auto tech 3 · 1⤊ 0⤋
I am not much help, sorry, but just wanted to say that trailer lights suck. There is always a mysterious problem. Do check your grounds and connections, however. If the lights work OK on one truck and not on another, which is a late model, my guess would be a faulty-and-or-improper connector.
A tip: Go to Auto Zone or Advance Auto or O'Reilley's before you spend big bucks and see if there is someone there who will examine your harness. That's what I did and all I needed was a cheap connection replacement.
2007-08-26 18:19:43 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Bad ground between the truck and trailer.
9 times out of 10
2007-08-26 18:29:05 · answer #3 · answered by Mr. KnowItAll 7 · 0⤊ 0⤋
Wire or connector must be bad for the driving lights on the truck side of the wiring harness---check with a test light that has a pointed tip so you can probe the wiring for power at the connector terminal or in the wiring. Depending on whether you have a 4 wire or 7 wire connector, it could be one harness is wired different from one truck to another.Some sites with general wiring diagrams---
http://www.etrailer.com/faq_wiring.aspx
http://www.accessconnect.com/trailer_wiring_diagram.htm
http://www.marksrv.com/wiring.htm
2007-08-26 19:03:12 · answer #4 · answered by paul h 7 · 1⤊ 0⤋
Check to make sure power is coming from the pwr wire from the truck. Best way for that is a meter, stick one lead in recepticle and other on frame of truck. You can also test your ground by this method. Sry i dont do this on trucks much, but i work on heli's so hope was helpful.
2007-08-26 18:22:39 · answer #5 · answered by KrazyK17 1 · 0⤊ 0⤋
any tow vehicle that has sepate turn signals from brake lamps require a different wiring process that the old standard 3wire trailer harness
2007-08-26 18:20:53 · answer #6 · answered by John St.Louis 5 · 0⤊ 0⤋