How To Connect Remote Wire From Amp To Head Unit?

[Firebreather]

Hi, I have got an amp and a sub, I know how wire all the wires except the remote wire from the amp to the head unit!

My head unit has the the following connections at the back:

standard iso connecter

2xpre amp outputs (rca connections)

antenna

So where would i connect the the remote wire to? And I heard I should also put a 0.5 amp fuse on the remote wire, is this true?

Thanks!

[91CelicaGTI]

On your standard iso connector there should be a load of wires.

1. Constant power = Red

2. Ignition power = Yellow

3. Earth = Black

There should also be 8 - 12 speaker wires. Lots of different colours.

There should also be an extra Wire in the wiring harness from the headunit that is not in the car harness. Normally blue.

If you have a volt meter connect it to this wire. when you turn the headunit on it should jump to 12 vt and then back to 0. and the same when you turn off the head unit. this is the wire you should use.

Hope this helps.

Oh, and NO you don't need to have a fuse in the remote wire.

[Firebreather]

thanks for clearing things up!

[sjrainsford]

The amp control cable will stay live whilst the stereo is switched on. It is used to operate a relay either in the amp, or an externally fitted one. And yes it's the Blue cable on an ISO connector A5