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Old 10-07-2013, 08:35 AM
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Worthing skier Worthing skier is offline
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Join Date: May 2010
Boat: mastercraft prostar 190 1993 & 1996
Location: West Sussex , sunny Worthing
Posts: 213
Engine check light

I found an old post re the ignition timing ,which shows shorting the A and B wires together on the diagnostic plug , also bring the idle up to 1000 , which gives you a base timing setting so I have adjusted to 10BTDC , this seamed to have worked .

My next question is re the engine check light , it does not illuminate , it appears that 1 side of the bulb is permanently grounded so I would expect the ecu to switch a poss feed to make it illuminate ? .

However the gearbox over heat light is also wired with a permanent ground , the switch is a ground switch , so the light cannot work , easy fix to swap the permanent side to a live .

Does anyone have a diagram of the warning light circuit , also should it illuminate when the ignition is turned on ?

Thanks

Kevin
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