The other day I completely rewired my boat trailer and replaced the tail lights on it. When I hook the trailer up to my truck, '99 Ford Ranger, the brake lights and turn signals work fine on my truck and trailer. When I turn on the headlights in the truck the tail lights on the trailer glow very brightly and wont respond to either the brakes or turn signals. I'm almost positive I have everything hooked up right with good splices and good grounds, due to the fact that everything works fine when the headlights are off. The lights I installed are the circular Peterson ones with a red wire, black wire, and a white wire for ground. Im pretty sure the red wires are brakes and the blacks are turn signals. I have no fuses blown in the vehicle either. Ive ruled out almost every possibility I can think of but Im not a professional by any means and dont have a lot of experience with this so any help would be much appreciated. Hurry I need to go fishing soon or I'm going to lose it!
2007-06-03 11:40:54 · 6 answers · asked by shinyun331 1 in Cars & Transportation ➔ Maintenance & Repairs
there are 4 wires white is ground ground can be hooked to trailr frame or run straight to truck but must ground trailer to truck. the other three wires are tail lights, to both sides then the left brake/turn and right brake/turn if tail light is brighter than turn brake light the two wires are crossed at the light.the brake is the brighter side of the bulb
2007-06-03 11:53:25 · answer #1 · answered by tott1 5 · 0⤊ 0⤋
The problem is probably not the trailer ... it is the tow vehicle... or rather the incompatibility of the two wiring systems. Many vehicles have separate brake light/ turn signal circuits ....most trailers combine these two circuits into one. This can cause the symptoms you are describing. Go to your local NAPA Auto Parts Store and get a turn signal converter (Balkamp part number 755-1086). It should cost less than $20.00. It will only take a few minutes to wire it in and it will solve your problem.
2016-05-20 05:03:42 · answer #2 · answered by ? 3 · 0⤊ 0⤋
Make sure you have good ground FIRST!!
Otherwise, brake lights will use running light circuit for ground.
Parking lights will only work with turn signal, everything will work backwards.....
Got jumper cables?
Hook one end to the trailer and the othere to the truck to ensure a good ground for testing purpouses.
2007-06-03 11:59:41 · answer #3 · answered by Mr. KnowItAll 7 · 0⤊ 0⤋
you need to trace your wiring on your trailer connector to see where you have a short you have wires crossed for your turn signal and brake lights to your vehicles headlight system find out which wires are hot when the headlights are on and diag from there but you did not make all the proper connections
2007-06-03 11:49:04 · answer #4 · answered by wrenchbender19 5 · 0⤊ 0⤋
The black is for running lights,the red is turn signal and brake lights.
yellow=left turn tail light red
green= right turn tail light red
brown= running lights tail light black
white= ground tail light white
2007-06-03 11:56:50 · answer #5 · answered by gdwrnch40 6 · 1⤊ 0⤋
you have the parking light from the truck hocked up wrong some how? do you have separate turn light and brake lights on your truck , if not you will need to get the proper module from a part store to have them work wright!
2007-06-03 12:06:59 · answer #6 · answered by mdmauto 3 · 1⤊ 0⤋