Rin Tin Tin

I had a double din head unit installed, but that broke. So now I'm trying to reinstall the stock head unit, but every time I plug in the cables (antenna and harness), the 2 fuses under the hood gets blown.
Anyone have a clue to why they're being blown or am I missing a cable that needs to be plugged in?

dizaryl

Was the factory harness altered for the double din install? or did it just have a male/female compliment that plugged directly into the factory wiring harness?

Marcac

iTrader: (6)

If your factory harness was untouched (The Double din was installed with a wiring harness that plugs into the factory one) and your fuses are blowing it could be a short in the radio itself. Other than just make sure none of the wires behind the radio are bare. Good Luck.

Rin Tin Tin

I didn't change anything on the factory harness; used an aftermarket harness to plug into the factory harness.

Is there a way to check to see if there is a short in the radio?
As far as I can tell, there are no bare wires

Marcac

iTrader: (6)

There is not an easy way to check a radio for a short. they onyl thing you can do is use a multimeter and check for continuity between the ground pin and either constant power or switched power.

Rin Tin Tin

I'm going to have to get a multimeter then. Thanks for the help

dizaryl

Buy a Fluke multimeter if you have the cash. If not at least buy one that "rings" continuity if only a few ohms/resistance is measured. I have no idea what the resistance of a stock head unit is , yet. I have one sitting in front of me with a good multimeter to compare notes with once you get yours.

Rin Tin Tin

not sure if I did this right, but here is what I got for the readings

Marcac

iTrader: (6)

Ok depending on whether these are counted from the mating side or the wire side of the connector, the constant power wire is either pin 10 or 11. If your meter was on continuity with one lead on ground and the other on the wires, and your radio is plugged in, then your constant power wire is shorted to ground which I would think would be a sign of a shorted radio. Here's a link to what each of them should be.
Mitsubishi pin-out

dizaryl

Marcac thanks for that link. I went out and pulled my head unit to try to help out before your link was posted. Any way to simplify things even more here goes.

by the above chart top to bottom left to right 1-14
1 Lite green RR(+)
2 White/ Blue LR(+)
3 Yellow ANT Trigger


4 Green/ White Not Used
5 Red/ White LF(+)
6 Red RF(+)

7 Yellow/ Green RR(-)
8 Yellow/ Red LR(-)
9 No wire Not Used
10 Blue/ White 12v IGN
11 Red/ Black 12v Constant
12 Black/ Yellow Illum Not Used
13 Red/ Blue LF(-)
14 Green RF(-)

Hope this helps, but it sounds like I'd take my advice from Marcac

Rin Tin Tin

I tested the unit on the mating side, while the unit was not plugged in.

Should I do another test with the unit plugged into the car?


Also, thanks for the wiring link. Was looking for something like that for awhile

dizaryl

I had hoped that you were testing it from the mating side after Marcac's question. If it turns out it's bad I have a factory 06 non ssl headunit.

Marcac

iTrader: (6)

It depends, what did you have your leads connected to , one was one the pin in the radio what was the other on? If it was on the chassis of the radio (ground when in the car) then your test is pretty valid and i'd plan getting a new radio. Let me know how you did it.

Rin Tin Tin

I had the black lead touching the inside of the antenna port and the red lead touching one of the pins.

I had the black lead there because I thought the unit gets grounded by the antenna wire. Or am I wrong and it gets grounded by something or somewhere else?

Marcac

iTrader: (6)

That inside of the antenna port does show ground. I think your radio is gone, I've got one on eBay right now with a few hours left I think it's still at the starting bid of .01 plus shipping. Let me know