I’m selling a mychron 3 gold it is in excellent working condition. It comes with everything you see in the pictures. Including the tach, and expansion box lap timer infared sensor and wheel sensor for Mph wheel speed. The expansion box has one port for lap timer, one port for wheel speed and two ports for temps. The tach has a built in shift light and gear position LCD. It does show some wear with some scratches on the expansion box and lap timer sensor but nothing that would effect the functionality or performance of the unit. I’m asking $350 Obo shipped. Call or text me at 760-415-3908 or pm me.