so i have a 1991 XJ Laredo and i got a Sony CDX-GT130 deck. its all hooked up and everything works. but the radio doesn't hold its memory when i take the key out from the ignition. no problems with any fuses either. would the radio be the problem or is there another problem? im just sick of resetting everything everytime. thanks for looking.

 

You don't have the constant battery voltage wire from the head unit hooked up right, you have it wired to a switched circuit. Should have ground, constant battery, and switched.

 

okay thanks im gonna look at a wiring and the radio today.
im still having a problem. i cant find any wiring colors that match up with my laredo. i checked multiple sites and i cant find the right wiring colors. its a 1991 Jeep Cherokee Laredo

 

Should have two hot leads. One red goes to constant on. straight to battery. One yellow to a keyed switch in fuse box

 

I want to say one was a orange with a blue stripe. (on the Jeep side) that was one of the power ones IIRC

 

Go to BestBuy and get a plug in harness for your model year, it will save you a lot of headaches.

 

the memory lead on my XJ was pink,just my .02

 

if you're sure about your mechanical skills, you can run a fused link from your battery. otherwise, shut the vehicle off, put an ohm meter on those two wires, see which one has power. the one that does have power, goes on the yellow wire from the head unit.

 

I believe the the yellow is supposed to go to constant 12+ and red goes to Switched (ignition) 12+ I have a Sony Head unit also...Tj

 

i have one but the ***hole b4 me ripped the whole radio system and wiring hookup out so i had to splice all the wires to just the input to the radio. i havent had any time to go to a junkyard either to hook one up. i had to nearly start from scratch :P. i got it running and i still got to look at it for the memory. ill check next week. my job sucks and let you know what i figure out.

 

That is the problem with vehicles this old and owned by a few people ahead of you, there will almost always be some butchered up wiring someplace.

 

yeah exactly. thats why it was a project when i bought it. and at least im getting some experience with electrical since i wanna be an auto tech anyways.

 

i gave in and got a setup from the junkyard and everything works properly. if only i did that first lol. oh well i know i got a stubborn mind.

 

For next time check:

http://www.the12volt.com/Default.asp?