1991 ford radio help

>>15390535
Red is probably hot at all times.
Yellow black is likely to be fused.
The ones with same colors but different traces are the outputs to speakers.
Black / white might be ground.

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This is the shit for my radio, I just want to hook the damn thing up but I can't find any refs for this truck of what I am suppose to hook it up to

I'm pretty sure the black/white are the grounds for the left right speakers (I only have 2, none in the back)

http://stereowiringdiagram.info/1991-ford-f150-truck/

Went by what this said and still no response from the radio, it says also that the ground is red or black, WTF?

>>15390687
Try this:
Red - ground.
Yellow / Black - fused power.
Green / Yellow - battery.

>>15390687
just go buy a 10 dollar multimeter and read about electricity for 30 minutes, jesus christ.

Get a multimeter, with the vehicle off test all the leads for continuity going to all the speakers and then label each wire with masking tape. Red's probably going to be power, test for that when the vehicle's on. Whatever's left is probably the dimmer or something.

>>15390710
Did, cranked, nothing
I hooked it up as per the link

Check your fuses you nigger.
Did you unplug your battery?

Am I forgetting like a...."turn on" wire I need to short out or anything?

It is all connected properly by the way it looks in the link and twisty capped up. I just don't know what to do anymore.

I have gone through the f150 forums and nothing...

>>15390834
check all your fuses and relays

can't speak for a 91 f150 but I've got a 2000 focus and it goes
>red: ignition +12v (connects to yellow/green wire in car)
>yellow: constant +12v (connects to orange/black in car)
>black: ground -12v (connects to black/green in car, be sure to ground!)

>>15391447
Old truck, they changed the connector type, you can vividly plug and play

>>15391345
First thing tomorrow, as well as the multi.