Ok, so I'm confused again. I have two wires that require power. I assume one (probably the blue) is for the light and the other (red) powers the tach. My instructions say connect both the blue and red (in fact, they are tied together in a single connector) to power. Then I have a black for ground and a green that goes to the coils. Is this similar to yours? Did you connect both powers to the plug in the headlight or just the tach light? Thanks
http://www.speedwayinstruments.com/products/microtach.html
if memory serves the Raider is Dual fire...