lukecline said:ok went out and did some more checkin, this truck has the trailer package or what ever ya call it so it has separate fuses for the trailer lights. I pulled the trailer plug out on the truck and checked the wires there to roreri's list and they didnt match up. Right now i have a solid orange wire that has power all the time and a black w/ green tracer seems to be the backup lights. Oh and once i pulled the plug out of bumper the fuse doesnt blow anymore. The trailer plug is wired using a pigtail that plugs into two different plugs on the truck.
luke
If I am understanding you correctly when you pull the trailer plug from the bumper plug on the truck you have no issues?? If this is the case and you cannot find any issue with the truck wiring then it has to be in the trailer wiring and should be fairly simple to track down.
If the black with green tracer is the wire on the truck feeding the backup lights then all you need to do is trace it across the pins to the trailer to see which wire it feeds on the trailer. Then that wire it is feeding on the trailer has to be grounded somewhere to the trailer itself and will need to be ungrounded.
Not sure what type of tail light assemblys are on the trailer or if it even has backup lights but you might pull the bezels off and make sure there is nothing melted and touching in there. I have also seen this happen before and was caused by the heat from backup lights being on for an extended peiod.
The next simplest solution would be to cut the black wire with green tracer from the plug all together. If you do not do any backing up with the trailer at night then you should not have anything to worry about.
Good luck!!!
Later,
Darrell
