Trailer Lights

[craigc0914]

I noticed last night that the break lights and blinkers work on the trailer, the the lights that are supposed to be constantly on do not come on. I have a 5 prong plug with 4 male prongs and 1 female, with blue, green, yellow, 2 blacks and a white. It is a 2005 trail-rite trailer. I noticed the blue wire has copper showing and some of the copper strands are disconnected. Is the blue responsible for the constant lights? Anyone know what each wire is responsible for? Is it easy to replace the plug if need be?

[jmo]

RE: Trailer Lights

The blue wire on a 5 prong could be the reverse indicator that is used to lock out disk brakes when you back up or for electric brakes. If you have hydraulic activated drum brakes the blue probably isn't being used - they use the 5 prong anyways so they don't have to stock multiple connectors.

HTH,

jmo

[Rick]

RE: Trailer Lights

Pick up trailer boat magazine this month they have an article about trailer lights that gives all the colors. You can also try it on line www.trailerboat.com.

[MNSuperAir]

RE: Trailer Lights

Find the fuse for the trailer parking lights in your vehicle. Chances are it is burned out. 99% sure. Happens to me all the time. What vehicle do you have, Dodge?

[SquamInboards]

trailer lights

yellow - left turn signal
green - right turn signal
brown - park / tail lights
white - ground

jmo is right, blue is (usually) for reverse - to lockout the brakes when backing up.

SO it's either the fuse as MNsuperAir said, or it could be a bad connection on the brown wire at some point. The end plugs are easy to replace and readily available at auto parts stores and well-stocked marinas.

[craigc0914]

i was towing with a chevy 2500 truck. I hooked it up to my neighbors ford f 250 and the running lights all came on. Guess its the guys fuse on his Chevy. So, there is a completely different fuse that controlls the trailer light hook up?

[MNSuperAir]

Yep, completely different for the trailer running lights. Mine blows in my Dodge 2500 couple times a year.

[h20thief]

I blew the fuse in mine the other morning. I tried to hook up the light connection in the dark and was off a little. I noticed a spark at the connection then no running lights. I bet I've replaced that fuse 15 times, what a pain. I drive a F250 so at least the fuse panel is easy to get to.