I have a 2005 Supra launch 22SSV. It was layerd up in storage for a while (4months) and upon inspection the alternator had seized BUT the boat would run. This was after a full service replacing all plugs, leads, fluids and filters etc. Now after having the batteries on a reconditioning charge, a new alternator and everything hooked back up it won't crank. I have power, turning the key gives me the 3 beeps but nothing after that. I have arched the pos to the neg on the starter and it spins but doesn't engage. I've checked the safety lanyard and all the fuses (that I know of) and still nothing.
Any suggestions?