Our Sea Cadet unit's boat cannot be put back on the water until the faulty safety kill switch is sorted - fair enough.
When I was tarting up the boat a few months back (sans engine) I had a look at the actual safety switch knowing, from last season, that the 'safety kill' had issues (it's a toggle type switch which you loop the kill cord over) and checked it with my test meter - it worked solidly, reliably and repeatedly. That's as far as I checked, tho', as we have a local repair shop for proper servicing and the actual engine wasn't on the boat.
Oookkkaaayyy, when that shop was carrying out a repair to the fuel pump recently, I went to have a looksee under the engine cowl to see how they were getting on (the boat is 'dry docked' at the moment) and found that a black/yellow wire had been cut inside a harness.
Ok, they have now 'fixed' the engine's fuel issue and a looksee under the cowl shows that they've re-crimped that cut wire. However, the top ignition coil still has it's
black/yellow wire hanging loose - it's been cleanly cut and goes nowhere.
They have just told us the boat cannot go back on the water as the safety stop doesn't work properly.
A surf for wiring diagrams shows the 'black/yellow' to be the 'kill' wire...
A few questions, please;
1) Should all
three 'black/yellows' (3-cylinder) be connected?
2) Would the engine be able to carry on running if only two were 'killed', even roughly?
3) Can you confirm for me (as I recall during my testing) that the kill switch works by killing the engine when it's 'ON' - ie. it 'shorts' the circuit and not 'opens' it?
Many thanks for any help on this.