Headlight trouble shooting
When I purchased my van the headlight relay connection was burnt out. A mechanic 'fixed' it for me. But when I drove home I realized only the brights worked. Then they 'fixed' it again and only the low beams worked.
Now I'm attempting to upgrade my low beams to the LED mentioned by some members here in the forum. But no matter the wiring configuration on the male end of the new LED lamp, the lamp only comes on on Hi beam mode. All 15 lights vs 5 lights (low beam mode).
I don't understand enough how the hi and low beam works in order to trouble shoot this. I'm fairly sure it has to do with what the mechanic did previously.
my low beam currently has a 3 prong adapter and hi beam 2.
when I put the ground in the left port and the red in the lower port I get all 15 lights. Any other configuration I get none.
how can I trouble shoot this?
Id like to be able to drive with the low beam setting on.
Re: Headlight trouble shooting
The problem with non-original equipment is it can induce unexpected variables and behaviours.
The quickest repair would involve reinstalling known good OEM lamps, then correct the wiring.
The wiring could be the hard part as you don't know what they did,hopefully their hacks will be obvious and the first thing to correct.
Then you can move onto correcting whatever the original fault was caused by.
Once everything is back to what it should be, then go ahead and upgrade the lamps.
Re: Headlight trouble shooting
That's good advice. Thanks
Fog light/headlight wiring issues
So I put new LED headlights in and now my fog lights aren't getting any volts to them, but the switch is fine. I suspect it has something to do with the headlight circuit and how the new headlights function. It took some figuring out to get the LEDs to function in the same way the stock headlights work as in the low beams staying on when you switch to high beams. I have that part figured out the best I can. I haven't altered the stock headlight harness at all, just re-pinning the LED headlights. When just the low beams are on, the high beams are receiving very minimal voltage, so they are lit but not enough to really tell. I think without the LEDs being dual filament as in the stock sealed beams is throwing something off in the circuitry and causing the fog lights not to receive voltage since the car is seeing slight voltage to the high beams. Any thoughts?
http://i.imgur.com/0NtTcIb.jpg
Re: Fog light/headlight wiring issues
I just installed some LEDs too. I'm not satisfied with the electrical portion of it though. I read the schematic and LEDs really aren't compatible out of the box. The van headlights have a single power wire and negative switched high and low beam. This is backward from how the LEDs are wired. In addition the high beam indicator and fog light relay require a positive signal backtracking from the headlight filament for power. LEDs do not provide the resistance necessary to light the incandescent dash bulb, or trigger the fog light relay. I'm planning to install 4 relays, one for each bulb (behind the dash) to swap the negative to positive and provide the proper positive power to the high and low beam, dash bulb and fog light wire.
I'm pretty sure this is why your fog lights don't work.
Re: Fog light/headlight wiring issues
Quote:
Originally Posted by
VanCo
I just installed some LEDs too. I'm not satisfied with the electrical portion of it though. I read the schematic and LEDs really aren't compatible out of the box. The van headlights have a single power wire and negative switched high and low beam. This is backward from how the LEDs are wired. In addition the high beam indicator and fog light relay require a positive signal backtracking from the headlight filament for power. LEDs do not provide the resistance necessary to light the incandescent dash bulb, or trigger the fog light relay. I'm planning to install 4 relays, one for each bulb (behind the dash) to swap the negative to positive and provide the proper positive power to the high and low beam, dash bulb and fog light wire.
I'm pretty sure this is why your fog lights don't work.
The best I made it work with the stock wiring is:
1: Fog lights on all the time, the fog light switch also controls the low beams on or off, everything works as normal if you leave the fog lights on. If you turn the fog light switch off you lose low beams and fogs.
2: No fog lights at all, and high + low beam function as normal.
I think #2 is the best option and I’ll simply create a dedicated, related circuit for the fog lights. I don’t want to alter the stock wiring at all because I’m not great with wiring and these vans are already plagued with wiring issues.
Re: Fog light/headlight wiring issues
To avoid electrical issues either the incandescent headlights should be put back in, or the wiring should be modified to send the proper voltage and signals to the LED headlights. The way the headlights are hooked up now is the definition of a "wiring issue."
Re: Fog light/headlight wiring issues