Originally Posted by Neal
My old problem is back.Just gone to startup the boat and looked like a flat battery got another battery and same problem. What could give the same indication of a flat battery. Thanks all
Its a fairly straightforwad circuit however there is insuffcent information such as I assume that the 2nd battery is a good one as one can expect their own battery to have a low charge at the beginning fo a season if unused over winter (lead acid battery that is).
I am assuming that you have checked the Isolation switch which are iffy at the best of times. Assuming that you have checked the connections then one is only left with the solenoid (relay switch often attached to the starter block or the starter itself.
I suggest you get yourself a Battery pack or flash starter or whatever they call them and earth first direct to adjacent Starter Black Wire Bolt.
Carefully with the other lead attach firmly to the Positive of the actual Starter unit (not the solenoid) and assuming this kicks to start, work back till it does not.