s13 amp install - help with wiring

[MoogieBoogie]

Hi,

I am installing an amplified subwoofer in the back of the trunk. There are four wires to connect.

1) An orange wire that needs a constant 20A feed - I am going to connect this directly to the positive terminal of the battery.

2) A black wire that needs a ground - I am going to connect this to the chassis.

3) A blue wire that needs to be connected to the system control terminal - going to connect this to the blue wire of my headunit.

4) A red wire that needs to be connected to the terminal controlled by the ignition switch. WHERE DO I CONNECT THIS?

So my question is, does everything look ok? Where would I connect the red wire?

Thanks,-Brian.

[onosqv]

yea, looks fine.

Find the wire on your head unit that turns on w/ ignition. You can find this via multimeter. I believe it is usually a yellow wire.

[Silvia2b]

Yeah just like "brokeAs" said, you can find this at the headunit harness (also called accessory power if it is momentarily interupted during the crank cycle of the ignition cylinder) as long as it is a small wire with low current consumption ( less than 7.5 amps). Otherwise you can always use the cigarette lighter harness which also accesory powered, and usually supplies at least 15 amps. Also make sure that the blue wire on you headunit is a remote turn on, or amplifier turn output that turns on with any operation of the headunits functions, (i.e. Cd, am/fm/xm/ changer/mp3....etc) sometimes there will be a power antenna turn on lead that shuts off during cd player operation, and lower the antenna.

Some sony headunits actually have a light blue wire for HU mute, like when you handsfree or NAVaudio is sending a signal. What kind of headunit do you have? Is this a bazooka tube style amp/woofer combo? What size is it?