How can I make use of the REMote lead on my car amplifier to turn on/off other devices?
My amplifier is running super hot (JBL passively cooled amp) and it always cuts my sound when it overheats.
I've managed to attach a PC fan and it's providing decent cooling for the amp. It currently has to be turned on manually using a rocker switch (wired to the front, underneath my seat) whenever I get into the car.
I know that the remote lead receives a electric signal when my engine is started and that switches on my amplifier and off when the engine's off.
What kind of switch can I get (hopefully off eBay) that will turn the PC fan on and of when it receives the signals from the remote line?