Changing Factory HU and factory amps to aftermarket HU

[Plutoman 10+ year member]

No money to afford a wiring harness - premium system with amps, so the harness is $36. HU is from my old car.

I'm confused as how to wire this. On the factory HU, are the outputs (I'm looking at a diagram of it) the pre-outs to the factory amplifiers? Or are those completely separate? On this, they only have one of the plugs on the HU - there's a second one in it in actuality, with a few more wires.

This is the diagram so far as I know. If I want to hook up my HU, how should I go about doing this? And before it's mentioned - connections will be secured, I'll make sure of that.

'Tis an Infiniti G20, 1996, for anyone who would have firsthand knowledge.

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[jdawg 5,000+ posts]

run your own wires, the obly factory ones you should need are to the batt, switched ignition, and ground out of the factory stuff

 

[Plutoman 10+ year member]

run your own wires, the obly factory ones you should need are to the batt, switched ignition, and ground out of the factory stuff

I'm going too... But I don't know which wires are which for the factory amplifiers. I want to still use those. As in, which are the signal wires.

 

[Plutoman 10+ year member]

So... Yes. How do I wire in the factory amplifiers to the aftermarket HU?