I know what you are trying to do. I'm trying to get you to not half *** it lulz. You might be able to run the pa off the cigarette lighter. What fuse is on that circuit? That pa will require slightly over 1amp if it is running at the full 15watts.

 

Okay so I ended up wiring by splicing the cig lighter wires. Starts up and runs great, however I have two random problems.

1). When my deck/stereo is on, and I press down the mic on the CB, you hear a thud from my 2 12" subs in the back. When you speak, you hear your voice from the subs. I have absolutely zero idea how this is happening! They aren't wired together at all and I covered everything I soldered with electrical tape.

2). When tuning my CB with its built in SWR meter, I can't get it to calibrate past the 3 (supposed to calibrate meter to full right at "CAL" mark, "3" is about halfway). So obviously my range is very limited. I have an adjustable tip Firestik II antenna and it's screwed all the way in because that got the meter as far right as it was gunna go. I went wheeling this weekend and it had about a 20 foot range haha. Worked great within that range.

Please help me with this. I don't know why I can't just tune it fine and I really don't know why it's going through my subs. My only idea is that some wires behind my deck where my amp is wired to are touching, but they aren't...

Thanks in advance.
Alex

 

Is your coax running next to the wires for the sub?

 

Good call. So can they not follow the same path?

 

They can't be close. The signal on one will induce the signal on another one.

 

Well they have to end up at relatively the same spot... I'll try and work it out tho.

What about the other problem I'm having? Any ideas?

 

The ideal location for the antenna is right in the center of the roof. If it's mounted near body panels then signal radiation is going to be screwy and/or directional in addition to potentially affecting SWR readings.

 

8$ at radiocrap for a cig lighter adapter with a power switch, has cable with ends you can solder/crimp to your power wires.

 

You put the plastic washer between the antenna and the ground plane?

 

The center conductor on the coax, connectors and antenna can not touch anything that is ground. At least one of the plastic washers should have a shoulder around it to keep that from happening. The shielding braid should be connected to a ground somewhere. Likely at both ends.

 

I've seen someone talk about wrapping your positive around a fuse in the fuse box and the negative to a ground bolt next to it. Any thoughts on that approach?

 

Wouldn't do it because you could blow your whole fuse box. DONT DO IT.

 

Oh my gosh!!!!!! I'll wire it to the cig lighter. Gunu read through this thread and figure out how haha

 

Take postive and solder it to the postive, and solder negative to negative on cig lighter. I got my cig ligth adapter on amazon for like 5$.

 

Funny, I just scored a Cobra 19 plus with a mount and wired to a cigarette lighter plug for $10 at a garage sale. I was inspired by the new
Should be fun. Will wire it up for real if it works.