Blue Behemoth Build Thread (01 Yukon XL)

[Rayyy]

Hmm something screwy is definitely going on with my headlights.

Could a faulty headlight switch cause this?

 

[Rocket Man]

Hmm something screwy is definitely going on with my headlights.

Could a faulty headlight switch cause this?

Yes, or a bad relay. Try swapping the headlight relay with a different one, they’re used in a few places in the fuse box.

 

[Rayyy]

Swapped a couple different relays around, same thing is happening (when I flip the headlights to on, the fogs turn off). The fogs only work in the parking lamp mode.

My highbeam bulbs are missing at the moment, along with my DRL’s, as I’m in the process of swapping in LED bulbs. I initially had hyper flash (two days), then installed an LED EP29 flasher, which fixed the hyper flash.

Could this have burned out my headlight switch in the meantime?

 

[PG01]

Could be because like mark and Tony so graciously corrected me, when highs go on fogs go out so maybe its not completing a circuit with the high bulbs in..

 

[Rayyy]

Indeed Mark was right, I put the high beams in to test, and the fogs work!

 

[Rocket Man]

Indeed Mark was right, I put the high beams in to test, and the fogs work!

All good now?

 

[Rayyy]

Almost... Last bit of lighting up front, I’m trying to get the DRLs to come on with the Parking Lamps.

One of the DRL sockets is melted, so instead of replacing them, I figured I’d just let it be, and tap into the parking lamp wires so the DRLs come on at the same time as the parking lamps (installed switchbacks in all four sockets).

But somehow the DRLs are not lighting up even though they are wired into the parking lamps.

 

[Rocket Man]

Almost... Last bit of lighting up front, I’m trying to get the DRLs to come on with the Parking Lamps.

One of the DRL sockets is melted, so instead of replacing them, I figured I’d just let it be, and tap into the parking lamp wires so the DRLs come on at the same time as the parking lamps (installed switchbacks in all four sockets).

But somehow the DRLs are not lighting up even though they are wired into the parking lamps.

Are they installed with the correct polarity since they’re LED?

 

[Rayyy]

The DRLs do flash orange, just don’t light up white. I’ll try to flip them around to see if reversed polarity will change anything.

 

[Rayyy]

Ok, it’s the bulbs. I had two different types in there (to compare which is brighter), I swapped them around, and now the DRLs come on when parking lamp switch is on, but not the parking lamps.

Just need to order another set of the bulbs that work.

Given that they are LED, I should be able to get away with this connection set up, ya? No relay required?