Amp Help

[OCLostSoul]

I'm hooking up a sub and amp to a factory head unit and have everything figured out except the remote turn on from the amp to the CD player. If anybody could give me a little guidance, I'd be very grateful. What happens when the remote is not hooked up?

 

[B94Sport]

If the remote is not hooked up, the amp will not turn on. There are a few new amps on the market now that do not require a remote turn on lead, but if your amp has an input for one, then it needs it.

 

[OCLostSoul]

So where would I hook that up on the factory head unit?

 

[B94Sport]

That I am not exactly sure... But you could just use whichever wire is the wire that gets power when the ignition is on, which I would also assume turns on the radio. Find the wire that turns on the radio, and splice into that one.

 

[OCLostSoul]

thanks, that's what I was thinking of doing. I appreciate it.

 

[KEbert]

Some head units will actually have a lead for an amp turn on. My Pioneer 7200 has one. But others you can the power antenna lead.

 

[B94Sport]

This is true, but with the stock HU you are better off just using the power lead. I know that my HU retracts a power antenna (I don't have one) when you switch from the radio to the CD player, so that would shut off the amp if you used the antenna lead, right? I am just guessing.

 

[KEbert]

I guess I didn't see that it was the factory HU. So yeah, any hot lead will work.

 

[Robert]

I used the switched +12V supply for my factory HU. I tied in to it behind the HU and ran the wires through my center console. I installed a switch inside my console in between the HU and amplifier though so I could turn the subwoofer amplifier on and off. That way I can turn off the subwoofer amplifier without having to turn the key off. Without a switch my amplifier would be on everytime the key was on, regardless of whether or not the radio was on.