driving a tri-color LED via separate 12v earth and 12v supply
I'm currently (pun intended) building a motorbike and want to have minimum clutter on the bike. I am wanting to incorporate a tri-colour LED to indicate status for high beam lamp AND neutral indicator lamp. If both are active, it will indicate Amber(or yellow).
so the problem is, high beam is easy to acheive as its a 12v supply, neutral is more complicated as this operates pysically via earth on the gear change. I need some sort of relay to drive a 12v supply, but have very limited space to do it in.
do you guys have any suggestions?
I'm looking at a height of 10mm max and length 20mm so transistors or something. I can solder and follow a circuit board so any suggestions what to do would be appreciated.