Analogue tacho input (W) 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Pos SCR Neg Charging alternator W B- 5.3 DC connections 5.3.1 Digital inputs 39 40 41 42 43 44 45 46 47 48 49 50 In In In In In In In In MB on MB off GB/TB on GB/TB off In order to be EN60255 compliant, when wiring is more than 10 m, a 4007 diode must be connected on each input.
