Talk Morgan Forums Morgan Sports Cars Morgan Three Wheeler & Super 3 Revs not going to idle

Yes although not relevant now to Laurens problems the immobiliser interrupts both the starter and coil feeds. It actually provides a pair of parallel breaks for each with two cables from fuse 6 (fed by engine relay) for coil feed and two from the start relay. The immobiliser returns for each parallel feed are later joined together as single cable for the common coil supply via engine loom and starter motor solenoid when start relay operated. Reason for this could be to split the switching load or maybe just belt and braces. It also has its own permanent +12 volt supply and an ignition switch supply via fuse 11, in order to function. Tracing wires of course is a nightmare as all are black for anti-theft reasons.

Fuse 5 is also fed by engine relay as is fuel pump (normally) and powers the two lambda sensors, despite being labelled engine ignition.