looking for a 12 volt unswitched power source.

I am going to hook up a CB Radio and I want to be able to turn it on with out the key in the ignition.

Obviously I could run a lead right to the battery but I am looking for a clean power source.

 

I just snuck a wire in the radio fuse when I had a CB

 

You could probly use the lighter wire. Should be hot all the time

 

there is a hot wire that feeds the fuse box good power souce hot all the time but becareful not to ground the 10 or 11mm socket on metel in the dash when removing the nut

i would also put a in line fuse on that wire close to the sorce of power ( + )

 

Can you be a little more specific on where this wire is ?

Thanks.

 

Wouldn't a wire directly to the battery be cleaner than any other source? Then you wouldn't have any static being developed by the alternator, heater fan motor, turn signals or any other electric component.

 

this is the fuse box for 2002 f550 my spair

there is a plastic cover over the nut that comes off it has too little clips on the sides

this wire is power feed for the fuse box comes rate from the batties.


"i know i cant spell good so i work with my hands "

 

but putting a nother hole in fire wall and running a wire from bat to the cab can be even messer look like crap if not in loom and put away nice.

trust me look at my truck when i first got it, it still bother me when i look at it to long

 

I guess I misunderstood your post. I thought you meant "clean power" not clean looking. I see what you are getting at.

 

There should be a bundle of four wires by the PCM and the e-brake marked "customer access." These wires pass through the fire wall to the engine bay for these kinds of additions.

 

Chris is right, right next or behind the OBD port, you'll see a wire harness, a plug in of sorts, tap into the hot from there, I want to say red with blue trace but not certain. I ran mine right to the battery, its clean.

 

when I said clean power source.... I meant clean power with no engine noise.

Thanks.

 

Gotya, right to the battery I did with no interferance. No engine noise..