HMMWV Reverse lights

[Myrddin]

Only if one wants to go from a beep beep road runner to honka honka louder horn.

Motorist... Can you hear me now, CAMO

I bet that’s why they switched it. The horn on there now is super loud.

 

[Myrddin]

Normal? Not really, but not unusual.

But yes, Y the power wire and you should be good

Thank you and everyone else for your help. Hopefully I can return the same sometime. Or help someone else in turn.

I’ll follow up once I have wrapped it up.

 

[TurboR1]

First you need to add the reverse switch and get power to it. Lot of the time people will buy a kit (with bracket and switch for the 4L80 or just hte switch for the 3-speed). You split power up at the horn, run it back to the switch, then back to the lights (I went along the main wire harness to the bad with my stuff).

Then I assume for this mod they modified the blackout light lense, and just removed the blackout light power and replaced it with the power from the backup switch.

(You go from the horn because the power is switched the same as it is for the rest of the lighting...)

Yes, thank you for writing this out. I pulled power from the the horn wire to the reverse switch in the shifter and pulled from the wrong side originally. My horn honked when in reverse. Doh. I ended up slicing into power from the light switch similarly to the ambulance wiring to the shifter switch, I split the power into 3 leads. One went to a switch for the fog light near the rear differential for additional light when needed. One went ro a backup buzzer. The last lead went to the blackout bulb socket. I simply removed the blackout light filter. It pops right out and retains the clear lens.