For a year I've been looking for a way to make my alarms LED power bigger stronger LEDs. Most alarms LEDs are small or dim and under powered for anything bigger or brighter. So after trial and error I found a micro 12v relay that requires minimal voltage and current to trigger the coil and switch 12v at a couple amps. Enough to power most any 12v LED or strip. I replaced my LED with the relay and power two 12v 6 packs up on the dash now, super bright and noticable. I even have left it armed as long as a week due to snow and it didn't drain the battery. And just to be abnoxios, there's a switch i can throw to a standard 12v relay and flash my LED underglow.
You can find this relay at DigiKey.com part #374-1113-ND
Its as big as your pinky nail and you have to solder leads to it.

 

dang man thats pretty sick...LOL....never taught about that..