Pop when power applied...

[89Saleen215]

I'm upgrading my 08 Shaker 500 HU to a Kenwood DDX512 HU. I got the wiring harness adapter for the Shaker 500 and everything hooked up to the Kenwood wiring harness fine...except for a couple wires.

I'm assuming something I did wasn't right and that's why I get the pop through the speakers when power is turned on.

The Ford wiring harness has:
- OR/BK - negative dimmer (I attached this to the negative (BK) wires as the Kenwood harness didn't have this.) The dimmer doesn't seem to work.
- 2 BL/WH - positive amp power (I attached both to the 1 BL/WH that is on the Kenwood harness). Works

The Kenwood wiring harness has:
- LTGN - Parking sensor (I attached this to the negative (BK) wires as I wanted this to always be "on". If I understand the circuit correctly the parking brake circuit is always "open" and is only "closed" when the brake is applied. Is this correct?)

So is one of those 3 wire connections wrong causing my "pop" or do I need to look elsewhere? The amp's for the subs work and all seems well just the dimmer don't work and I have a "pop".

 

[Supradude26]

To eliminate the pop noise you need to put a 1000 to 1500 ohm resistor in line on the blue/white remote turn on lead comming off the back of the new deck. The factory Ford amps only use approx. 5 volts on the remote turn on lead, and the new deck is supplying 12volts,l thus you get the pop noise. The orange black wire on the ford harness should not be connected to anything. The orange wire on the ford harness should be connected to the orange/white illumination wire on the Kenwood harness to get the dimmer to work.

 

[89Saleen215]

Thanks for the reply.

The OR/BK wire had "negative dimmer" written on it and it is a Scosche piece so I "assumed" it was used by Ford. I'll pull it and see if I get a dimmer.

Is there a nice way to add a resistor inline?