Skip to main content
Topic: Sun Visor wiring differences (Read 894 times) previous topic - next topic

Sun Visor wiring differences

Our cars and pretty much every FoMoCo product that had illuminated sun visors had a very basic one wire feed for power and grounded to the frame through the metal mount and screws up until the 90's at some point where they went to a 2 wire setup and the mount material was switched over to plastic.

Many moons ago I found a set of early 90s Explorer dual illuminated sunvisors that were a direct swap.  No cutting, no splicing.

Someone put a terrific rip in the passenger one on my car a few months ago. 

I picked up a set of 03-04 Marauder Illuminated dual sun visors.... The mount holes for the TWO of the screws line up.  I'll have to drill for the 3rd.  Apparently they moved one of the holes with the metal to plastic mount switch.....  No biggie.

Another thing.  The pigtail for the newer style visors is as I mentioned; TWO wires....  I'm ASSUMING one is ground and one is power  It gets better.  The driver side has 2 black wires, no markings.  Passenger side has a green with red striped wire and a black with orange striped wire....

I TRIED feeding power to one wire and grounding the other on the roof.  Blew the fuse for the circuit....  Someone I know suggested trying to test it direct to the battery.  No dice.....  Also a theory.....  Both wires somehow get power and the ground is the metal nub the wires come through.....

If anyone actually KNOWS I'd be grateful. I have the sun visors installed and the wires taped so that can fish them back out.  It's not as if it's an absolute necessity for me to have the visors illuminate, but it would be nice.  I mean the car came that way so....
-- 05 Mustang GT-Whipplecharged !!
--87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's!

Re: Sun Visor wiring differences

Reply #1
leme ask you focus on the pass side visor,,,

how many functions does the pass side have..?

I think there should be an "auto illuminate" when you flip the lid up.... think door jam switch.
the other function could be a side switch that turns the lights on/off always even when the lid is flipped  up.

I cant imagine a reason why a light bulb would be polarity sensitive unless its a led rendition bulb.

two black wires to me means i need to pause and dissect that visor gently to see whats going on before i power up.

what i think you could do to discover which wire is doing what thing....

figure out how to get the bulb out, then tone from one of the wires to the bulb socket,, and also to one side or the other of the on/off switch if equipped with a switch,, then sketch you up a drawing .