Green wire goes to the coil, I crimped a spade connector on the wire and shoved it into the service connector that has the green boot cover on it, I made a small hole in the boot for the wire to pass through. The white wire goes to anything that is 12v with the key on for backlight illumination, the red goes to the 12v power and the black is ground if I remember correct. I would go to Sunpro® and download your manual just to verify. Best of luck. Here is a link to mine http://www.toyotaminis.com/forum/in.../sr5-gauge-cluster-improvised-truthful-11024/ Later, 22R88
