Matt33
Registered User
I have no parking lights fuse is good what is the problem?
I bet it's not the switch. What you are doing when you pull the switch out halfway is crossing the contacts inside the switch, running the park lights from the headlight power.
This is a classic case of your tan/white wire burning up either at the headlight switch plug, or somewhere along the wire. Very common problem. They sell new headlight switch plugs with wire pigtails on them at the store if you need to replace it.
The tan/white wire is the power coming into the switch from the fuse you were looking at. There is another power wire entering the switch for the headlights power.
LED lights to draw less current? Though I have an issue that sometimes my LED tail lights are dimly lit when off. Maybe other wiring issues.
It's not the dual-filament bulbs that cause the problem, it's the fact that LEDs indeed draw less current, and the old thermo-mechanical flashers "fire" based on current (really on heat). Electronic flasher fixes that. There are two-terminal electronic flashers out there. Depending on which truck the OP is posting about (multiple trucks in his profile, and no mention of which one is in play here), some electronic flashers have bigger bodies, and don't fit behind the fuse box cover.and LED's can cause problems with the flasher circuits associated with these dual filament bulbs.
It's not the dual-filament bulbs that cause the problem, it's the fact that LEDs indeed draw less current, and the old thermo-mechanical flashers "fire" based on current (really on heat). Electronic flasher fixes that. There are two-terminal electronic flashers out there. Depending on which truck the OP is posting about (multiple trucks in his profile, and no mention of which one is in play here), some electronic flashers have bigger bodies, and don't fit behind the fuse box cover.
What I meant was if you convert the dual filament bulbs to LED for the running lights, you open up another can of worms with the flasher circuits that you have to deal with. You are correct, different flashers will correct that part, but sometimes you still run into "ghost" lights where the brake lights are on dimly all the time from leakage currents. I have never proven it, but I think it comes from the ABS and the cruise circuit boards that are tied to the brake switch wire. Brake controllers are tied to this wire also with circuit boards and solid state components.