Use a volt meter or test light to see if you are getting current at the connector on the truck.
Were these plug and play lights or did they require some wiring modifications?
A lot of times electrical things like this are due to a bad ground connection.
A test light is easier, but a volt meter will work too. Trace the wiring and test the hot wire at all wiring harnesses you encounter. You can google to find which is the hot wire at a given area and find various wiring diagrams.
Hope this helps you, but my experience with electrical is start at the problem area with a test light and keep following until you find and isolate the problem area.
Were these plug and play lights or did they require some wiring modifications?
A lot of times electrical things like this are due to a bad ground connection.
A test light is easier, but a volt meter will work too. Trace the wiring and test the hot wire at all wiring harnesses you encounter. You can google to find which is the hot wire at a given area and find various wiring diagrams.
Hope this helps you, but my experience with electrical is start at the problem area with a test light and keep following until you find and isolate the problem area.
