Merc engine control unit

[Tony Tulett]

Hi, I tried to start my engine but the key wouldnt turn probably rusted up . I have managed to remove the ignition switch, what I was going to do was to use another method of starting i.e using a switch. What I want to know is what what are the cables? The ignition switch is :- insert key, push key for choke, ign off, ign on and ign on starter motor. The colours are :- black,purple,red,black with a yellow stripe, yellow with a red stripe and yellow with a black stripe. what do they do? I know black is earth I think red is live but not sure.<br />Thnaks for any help

 

[rodbolt]

Re: Merc engine control unit

black is ground, purple is ign (key on 12v power) yellow/red is start. black/yellow is M or kill. the other M is for the black. yellow/black is choke. red is battery 12volts to the switch. normally red is fused and is sometimes red/purple.

 

[Tony Tulett]

Re: Merc engine control unit

Ah thanks very much, just a little lost on 2 cables, as you said "black/yellow is M or kill. the other M is for the black. yellow/black is choke"<br />Sorry im not too good on wires, Is it the Yellow with the black stripe for the kill and the Black with the yellow stripe for the choke?<br />thanks

 

[Ben Konopacky]

Re: Merc engine control unit

Tony ; Its just the opposite ,B/Y means Black with Yellow stripe.

 

[Tony Tulett]

Re: Merc engine control unit

ah ok thanks v much