well like the title says, im installing a shift light, not the tach, but this is a adjustable shift light, and with this im making a two step with this, i have made couple two steps with shift lights, but what i need now is the wire that gives the RPM and the main wire on the coil pack that controlls the coil pack, like the main wire, any pics or respond will be appreciated, and ill post pics once im done with every thing too