Hello all, I have an '04 mustang with the 460 and i recently got a new alpine deck. the smaller of the two harnesses that came with the deck have two blue amp turn on wires (assuming for my two stock amps in the trunk). Also, I wanted to hook up a long amp turn on as well while i'm back there for my future amp/sub plans. So my question is, where do I hook these 3 amp turn on wires when there is only one amp turn on wire on the main head unit harness? Do i connect all three turn on wires to this one on the main harness?

Next question: I'm going to plue the two RCAs into the top rca inlets on the HU that say "R" correct? Again, i'm assuming this means "rear" and I think just my rear spakers are powered by my premium sound, if i'm not mistaking.

Thanks for the help.

 

You should have an amp turn-on wire and a power antenna wire. I think the amp is blue and antenna is blue/white, but it could be the opposite. You just run the amp turn-on wire to all the amps.

R can mean rear or right, but probably rear, since left/right are usually color coded (white or black and red, respectively).

 

so that means I will run all three amp turn-ons into the one turn on wire connected to the main head unit harness?

 

Yup. That signal is low current, so don't worry about it. If it bugs you, you can use an inline resistor, but you don't need one.

 

whats the resistor gonna do to help? I have used relays if I was worried about too many things to turn on but never a resistor?

 

Relays will actually make more current flow than most amps will, because the circuitry in the amps is solid state, while most relays use coils that have fairly low resistance.

Car guys tend to use relays way too often, I think.

 

WAHUH?

"Relays will actually make more current flow than most amps will"---that part specifically?

The relay will only supply as much current as the amp needs, unless you mean the mA that the coil draws?

 

I am talking about the coil side, not the switch side.

 

I don't think 200 mA is going to make the head lights dim.

Again though how would a resistor help?

 

Who said anything about any of that stuff making the lights dim?