If you can post some info about your truck I will make you a wiring diagnostic chart that will provide a step by step procedure for repairing your lighting problems.

1. Front lighting: How many lamps are involved with the park and turn opperation? Inside each lamp how many bulbs are there? If 1 bulb is in each lamp how many filiments are in that bulb. If 2 bulbs are in each lamp are they both single element bulbs?
2. Rear lighting: How many lamps are involved? How many bulbs are involved in each lamp? Do you have back up lamps in the same lamp as the park/brake/turn lamp? How many filiments are in each bulb?
3. Are your turn signals factory installed or aftermarket kit. The kits usually require additional lamps to be installed.

With this info and your e-mail address I can send you a diagram and instruction on how to test the system. The only tools you need should be: test lamp, small wire brush, some emory cloth, can W/D 40, and a 3 foot length of 14 guage wire with alligator clips installed on both ends. James

I didn't do it, no one saw me do it, you can't prove anything! "Bart Simpson"