I just picked up an OHC with the auto dimming mirror and need to know what the wiring is for it...It has 12 wires, its from a 1998 Explorer. Thanks to anyone who helps me with this

 

http://www.cardomain.com/ride/296394/4

here you go bud..good luck

 

Thats for the OHC, I forgot where the write-up was for the Mirror. I love my OHC, good luck!

 

yea dosnt the ohc just need a hot?.some ohcs are prewired for that feature...just search,Im sure its there

 

here you go

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rear dimming

 

Hooking up the auto-dimming mirror is not that difficult. If you have the OHC already, you already have most (if not all) of what you need in the OHC wiring harness.

If it is ONLY an auto-dimming mirror, and does not have the auto-headlights feature (or, it has it, but you don't want to hook it up), there are 3 wires you need to be concerned about:

+12V constant (Green/Yellow) - this connects to the Dome Light Power in the OHC (Black/Blue)

+12V switched (Red/Yellow) - this connects to the Console Electronics Power in the OHC (Gray/Yellow)

Ground (Black) - this connects to the Ground in the OHC (Black)

- there is one more wire, a (Black/Pink) one -- this is the Reverse Sense wire. You can run another wire from the mirror to the (Black/Pink) wire in the bundle of wires that drops from the bottom of the dash to the transmission tunnel (just to the left of the center of the dash). If you connect this wire, the auto-dim feature will be disabled when your truck is in reverse. A lot of folks don't bother hooking this one up, but it's there if you want to do it.

If you have the auto-dim mirror with the auto-headlights option, then there is one additional wire (White/Purple) that you need to run down to the vicinity of your headlight switch. This wire is a trigger that turns your headlights and parking lights on/off automatically. It becomes the "trigger" for two relays [one connected in parallel with your headlight circuit, and one connected in parallel with your parking light circuit]. The "auto-dim / auto-headlights" writeup in the how-to section details how to wire up the two relays needed for this function.

EDIT: actually, in reading back through that and thinking about it, the (Green/Yellow) [+12V constant] is probably only used for the auto-headlights feature as well -- providing power to the circuit after ignition-off, so that it can keep your headlights/parking lights on for <<delay>> number of seconds after the truck has been shut off. The auto-dimming function of the mirror is pretty much self-contained and only requires switched 12V (accessory power) and ground to operate.

 

well bravo. since i have the ohc/auto dim/lighted dual visors/ mustang dome light hooked up. this staement of yours........ below explains why my dome/ohc stays on when i turn the ranger on and off. so if i dont have the auto headlights hooked up yet; this would be the reason to not connect the green/yellow constant wire. perfect. you have solved my dilemma i have been trying to solve for 1-month n ow. yes................

+12V constant (Green/Yellow) - this connects to the Dome Light Power in the OHC (Black/Blue)

 

well, umm... not quite.

I was talking, specifically, about the auto-dim mirror and its power requirements.

The OHC needs a +12V constant (Black/Blue) so that the dome/map lights work when the ignition is off. The (Green/Yellow) wire in the OHC is not what I was talking about...

From the description you gave of your issue, it sounds like you have connected your Console Electronics Power (Gray/Yellow) in the OHC to a +12V constant source -- it should be connected to a +12V switched circuit (such as the radio power).

 

exactly

 

EASY mod. it sounds a lot harder than it is. hardest past is cutting your head liner

 

cutting the hl was the easiest part for me. everything else was very difficult, i had problems with every aspect of the install, worked for about 12 hours on it, and in the end I didn't even get my ohc to work. I think this mod sounds alot easier than it is.

 

yea you hit it on the head with this one. I could not figure out for the life of it why my mustang dome/ohc/ stay on when the doors were closed and my cargo light comes on when i close my doors and go off when my door is open.............

So it seems that you are saying take the grey/yellow wire and splice it to the blue/red wire that goes to the radio. great i will see how it turns out.

i also notice that the cargo lights have 2 of the same wires and it is tapped into the blk/blue green/yellow wires of the dome system wires. am i making any sense. thanks

 

Here is a video I recorded of my delimma with my OHC/REAR DIMMING/DOME/DUAL LIGHTED VISORS






http://www.youtube.com/watch?v=5FosBEcgEMY

http://www.youtube.com/watch?v=bOVSkNGLh2M