I've got a simple 12v Red Led strip installed in my car, and i currently have it hooked upto a relay which turns it on when you unlock it from the key fob (the same as the interior / courtesy lighting) this was simple to do as everything was on the car already to create the circuit.
I would like to take this one step further and get the angry red LED's to turn on when I am driving angry. So using high revs, or high boost pressure (measuring the map sensor readings)
Would it be possible to use some kind of regulator or switch to control the LED's voltage based on a signal wire (either RPM, or MAP)
So my ideal would be, at 3,300 RPM I would turn on the LED's with 6v, then increasing to the full 12v at 4,000 RPM+ (its a diesel) or similar but measuring boost.
It might be a crazy idea, but I think it would be a fun project. Does anyone have any ideas?
Oh and the LED's are not under the car (fast and furious style) as that is illegal in the UK. They are positioned behind the front grill, so the whole nose of the car behind the grill is illuminated red. Looks really angry.