I have a 2005 Mitsubishi Endeavor and just got a FM Modulator so I can actually listen to my own music, however it came with nothing but a wiring diagram of the modulator.. So I was wondering if anyone can help me with installing it. For the most part I can do the ground and all the other wiring myself, however I know nothing about my new car and I have no idea where I can connect the +12 ACC Power line for the modulator. So any help you can give me in locating a wire I can splice into for power would be great, thank you.

 

cigar lighter socket
or get youself a multimeter, turn key to acc and find voltage in fusebox under dash. Turn key off and if it goes to 0, thats an acc circuit.
Alternatively, it probably draws very little standby power and you could just connect it to your 12v source.

 

Ahh ok, so basically the line it's wanting is one that goes on and off with the key? If so then if the lighter socket won't work there is one for power in general that does that and it also says it's 12v on the socket..

 

if you splice into the wire, everything will work. Its unlikely that the combined load will blow the fuse.

If the "general power" socket has no power without the key, then you could use that.

The acc wire on the unit will serve 1 of 2 jobs, either its a signal wire, so when the power is on it, the unit draws power from the constant 12v,
OR
the constant is a memory wire, and the acc wire will carry the full power of the unit.

 

Awesome good to know, now I did do some testing as there is a wiring harness that runs into the center console containing 3 wires, 2 blue and one black to all 3 plugs, one of the wires is a constant 12v source while the one I mention does in fact turn on and off with the vehicle and is 12v as well.

Now I do have one more question before I get to wiring this in, would the black wire mentioned be a ground wire I could also tie into?

Other than that I should be good to go, and thank you for your help thus far!

 

any metal will be ground. It would be a fair assumption black wire is too.
With the car off and the harness unplugged, check continuity between the black wire and a ground. (screw heads, steering column etc)

 

From what I was reading on Google and a Wiki document about the DC power adapters in a car, the black wire which is connected to the outside of the socket is listed as the -(negative) ground wire. So I would assume it would be safe to tie into that as the ground, unless of course I am mistaken lol.. But yeah I remember from doing an amp in my old car that I had to scratch the paint off an area for bare metal to ground it. Luckily if I can't tie into the wire I have basically completely removed the center console and half the dash earlier today to get to the wiring for the radio, etc so there is plenty of bare metal