Question about the oem 1990-1992 radios

[RangerReviver1990]

I bought this am/fm radio from an '88 f150 at the local pick and pull yard and I've been messing around with it trying to replace the cheap redneck radio set up (wire nuts everywhere) from when the guy that had this truck before me wanted a new radio. it's been a couple days and ive finally got it to turn on and everything but nothing will come out of the speakers, I cut the speaker connector out of the f150 and measured the volts coming out of it when it was plugged into my truck and it sits between .02 and .007 volts even with me adjusting the volume knob and pressing all the buttons, I cant actually see if it's doing anything on the display because the bulb is burnt out and I planned on getting a new one for it but I was just wondering if its a lost cause to try to get this old radio working and should just return it before my 30 day warranty was up for the radio. I don't also wanna buy a new speaker connector if that's not the issue

 

[franklin2]

You should have two black/white wires. That is the negative wires for the front speakers. White/lightgreen is the front right, orange/lightgreen is the front left. I would get some old speakers and wire them in temp to see if it works. If this stereo you got from the truck was setup for 4 speakers, make sure you tape the others off so they do not short out, and when testing, play with the fader control. If the fader is to the rear speakers and you only have the fronts hooked up, then you will get no sound.

It would be difficult to see if the radio is working with just using a meter on the speaker outs. And also, take a piece of wire and wrap around a nail and stick the nail up in the antenna hole so it will pick up something on the radio. Or at least you could hear some hissing I guess with no antenna, but some of the factory radios are pretty quiet without a antenna hooked up.