Radio doesn't work in Accessory mode...?

TuxRanger · Apr 3, 2008

Ok so I got a new/old ranger lol it is a 91 ext. cab 4x4 I was installing a radio cause it didn't come with one and I am really electrically inclined, but I am having a hard time finding out why my radio works when my truck is in pre-ignition or running but not when I turn the key backwards for accessory?...
kinda odd the only thing I can think of is the keyswitch, any recommendations.. Has anyone heard of this before...?? :huh:

Tested all the wires and fuses the wire that powers it when it is in pre-ignition is the same one that powers it in acc.

Muddycowboy · Apr 3, 2008

do you have power to the wire when it is in acc. position

irondragon013 · Apr 3, 2008

I know my 93 had a red wire that I believe gave the HU power in the acc. position.

TuxRanger · Apr 3, 2008

Yeah I tested it and in acc it gives no power.. It is really weird.. and from some wiring diagrams i have seen that big red one is a ground, which in wiring makes no sense cause red is a hot color.

michowski · Apr 3, 2008

Do you have your all time power hooked up and switch power? Is the radio ground on a good spot?

TuxRanger · Apr 3, 2008

michowski said:
Do you have your all time power hooked up and switch power? Is the radio ground on a good spot?

If you mean by all time power the memory 12v lead, yes and that functions fine..Switch power supplies 12v when the truck is running and like half a volt in accessory, it is really weird, Great ground! Could it have something to do with the keyswitch??

Muddycowboy · Apr 3, 2008

id say you have a wiring problem between the swithc and the input to the radio

Ranger SVO · Apr 3, 2008

The accessory wire at the ignition switch is a Black/Light Green. Make sure it has power when you are in the accessory position. At the radio the wire should be a Yellow/Black.

Hope this helps.

(if you find something different, post it so I can update my database)

TuxRanger · Jul 5, 2008

I am bringing this thread back to the top because I still have yet to figure it out? I took the whole casing off around the steering wheel so that I may look at the keyswitch and the wires that are under there. If anyone who has read this has this same problem Please let me know, I love my music and I work out of my truck alot and I need my music. :no2:

TuxRanger · Jul 6, 2008

I know someone out there can help me, I found the black/lime green wire it is big like a 12awg wire, and i believe it goes to a little computer box... PLEASE HELP I NEED RECOMMENDATIONS TO MAKE MY MUSIC WORK AGAIN>

Pistons23 · Jul 6, 2008

seems like your switched 12v might be wrong

TuxRanger · Jul 6, 2008

everything behind my radio is fine, I just need help finding where the power comes from when aux mode, i turn my key towards me and nothing turns on...

robot54 · Oct 30, 2016

I know this thread is ancient, but I had this problem for months. Turns out it was just me being ignorant about Ford truck key positions. The accessory position is counterclockwise from the lock position.

Previously I drove an Escort and ACC was where OFF is in this diagram (aren't most vehicles like this?)

On this topic, why is there both an OFF and a LOCK? This seems incredibly redundant. And why is there that stupid lever I have to push in order to turn the key to the LOCK position?

AllanD · Nov 4, 2016

Would you want to have your steering column lock while you were still driving and needing to steer?

Radio doesn't work in Accessory mode...?

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