The LC-1 will have it's own instructions. In short, install both and wire the analog output from the LC-1 to the analog input (white wire) on the VEI wideband gauge. Program the endpoints etc on the VEI gauge and you're set. Be careful with the LC-1, as there are things that can damage the LC-1 (such as don't run the car with the sensor installed but the controller not operating), so yes read everything first. Post here or email if you need more info.