The wires you are missing are not part of the replacement harness that comes in the kit. They come attached to the tach itself and must be used when the new tach is installed. I found a small harness that would fit at a Hobby Shop that specializes in remote control planes and cars. It does not snap in place like the original but is easily held in place with tape. The light will also need to be rigged. Either a bulb or LED connected to the light and to the ground. I sold that tach to someone else on the site a few months ago and haven't heard how he is doing with it.

We all like to think of ourselves as rugged individualists. But when push comes to shove most of us are sheep who do what we are told. Worst of all, a lot of us become unpaid agents of whoever is controlling the agenda by enforcing the current dogma on the few rugged individualists who actually exist.