Double Check My H/U Wiring...

[Shelbrain 10+ year member]

This is my first install and I was wondering if someone might be kind enough to check over my headunit wiring. I have a 2005 Chevrolet Impala and in order to replace the stock headunit you need this interface:

http://www.cardomain.com/item/PERGMCO

I will be installing an Alpine CDA-9830 headunit and am trying to mate the two together. I have connected red to red, yellow to yellow, and black to black. On the GMCO side, I am left with four RCA ends which I have taped off(for speakers), two orange leads and a blue lead. Do I not need these?

On the Alpine end, I have taped off all the speaker leads due to the fact that I am running new speaker wiring directly to the speakers from the amps, a blue power antenna lead, and a pink/black lead which the manual refers to as "AUDIO INTERRUPT>TO VEHICLE PHONE"

The part I wanted to make sure about was the blue/white remote lead from the Alpine harness is the one I need to run for the remote turn on. If I have two amps, do I run the one wire to the first amp and then splice the wire for the second amp?

Please comment if my wiring scheme above is appropriate. Should I tape off the 2 orange and 1 blue wires on the GMCO? Thanks!

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[Shelbrain 10+ year member]

Bump...still need help please!

 

[azbass 5,000+ posts]

run that Blue/White wire to #86 on a relay. have a CONSANT 12v go to #30. then a wire from # 87 to your amps, #85 ground, and #87a will be open.

wire it this way, because when useing 2 or more amps, it can be hard on a REM from the deck, thus over time can burn it out.

a little tricky, but better in the long run. look up a automotive 40amp Relay.

 

[Shelbrain 10+ year member]

Ok, thanks! Can I splice the constant and ground from the wiring harness itself?

 

[KaeZoo 10+ year member]

run that Blue/White wire to #86 on a relay. have a CONSANT 12v go to #30. then a wire from # 87 to your amps, #85 ground, and #87a will be open. wire it this way, because when useing 2 or more amps, it can be hard on a REM from the deck, thus over time can burn it out.

a little tricky, but better in the long run. look up a automotive 40amp Relay.

Agreed in principle, but there's no need for a relay until you're running 3 or more amps.

Typical Bosch relay coil draw: 150 mA. Typical amp remote input: >50mA.

A standard automotive relay will draw more current from the remote line than two amplifier remote terminals wired in parallel.