hi everybody!!
i have an mc28 tachometer and i want to connect it to the mc21 because the mc21 has broken down. (i have mc21 electrics and harness). my problem is that the tachometers are not the sames in the connection. the mc21 works with three wires (ignition, ground, and another yellow-green) and the mc28 with two (ground and pulse). i made some connections with those three wires but i couldn t make it work. is it possible to connect it and how? do i need to take pulse from another place? thanks in advance!!