Power source w/ignition on?

SON240sx Automotive
1

I need to find a power source to tap into in the engine bay that comes on with the ignition. Car is an S14 w/S14SR. I just can’t think of anything right now…I feel stupid:(

2

the one goine to ur deck, i think its the yellow wire

3

deck wiring isn’t in the engine bay lol

4

no but he can run a wire. its not hard

5

power wire to the deck is accessory power.

apex was asking for ignition power.

fuel pump relay?

6

I could use that to trigger a relay.

Also where do I hook up to the a/c so that I can turn the rad fan on with the a/c switch? I have looked everywhere, checked power from anything a/c and nothing.Trying to setup the flex-a-lite thermostat to come on with a/c and ignition only, right now its hooked up to battery only so its on even with the car off.