Is anyone good with radio/ wiring that could help me figure out why mine isn't working?

 

Yes

 

This is for my alpine head unit (after market radio) might help

 

what kind of alpine is it? I have a CDA7873

 

The model Alpine for that diagram shouldn't matter much, the majority of color wires are universal (blue=power ant, black=ground, RCA goes to amp, and so on. Does it have an adapter to the factory harness or is it all spliced together? Is it totally dead, or just not fully functional?

 

Yah that diagram will be the same for most head units... What is you problem with radio and do you have subs hooked up

 

Check fuses. I had this issue when i hooked up the subs in my jeep last week and it ended up being a fuse blown. But i would also check where all the wires actually go into the unit to see if its getting power at all.

 

this was connected to the yellow wire which from what I understand is the +lead in not are if I need these or not.

 

not quite sure on that. i hope somebody else on here will have better information

 

That's not factory, that's for sure.

 

looks like a choke -- they were probably using it to knock out some line noise--do you have a multi meter to verify that this is your 12v in? verify that it is 12v, then verify you have it on both sides of the choke...hold your meter black wire on ground, then take your red meter lead and touch both solder joints on that little circuit board (one at a time) verify 12 volts on both.

 

Factory.....http://www.the12volt.com/installbay/...tail/1210.html

 

That stake on butt connector is no good.


If you look at a stake on terminal from the end you can see a split where the ring will fold when crimped



Properly installed it should look like this:

 

I didn't see a yellow wire in the factory wiring. He really needs to find out if the yellow wire is 12v in, and if so where is it originating from. I agree the crimp on the butt splice might be bad, but why did they put a choke in line with it? they may have used a different 12v source other than factory to power the radio, therefore creating noise, hence the need for a filter....and what is the other (smaller) yellow wire? looks like it has an inline fuse on it.

 

I would would re wire everything. My radio was weird when I first bought it. Just by some speaker wire and have a good ground.