mac6150 wrote:I have a 1972 F250 and have similar issues with mine. Now, they work great until I turn the parking lights or head lights on. Once on, the front turn signal no longer flash. The back works fine. Also, the emergency flasher only works on the rear lights, is that normal? Now that the weather is starting to turn nice I'll probably take another look at the front parking lights and try to figure out what is going on.
I'm guessing the wiring didn't change a whole lot from 1968-1972 so they should flash both front and back on the emergency flashers - as soon as I made the changes i listed everything started working like it's supposed to so I'm guessing unless you have wiring issue it should work on yours also - I read alot of things saying you can't upgrade to led bulbs on older vehicles but it's working on mine so I think there's alot of misinformation out there........
