My son bought a 1990 Sea Ray last week with Mercruiser IO 350. The lights went dead as did the engine after sitting with the radio on for about an hour yesterday. So I went down today, gave the engine a jump, put my gauge on and it was putting out 7 volts. Now the issue, The alternator looks fairly new so I am having doubts. Is there a sure fire way of testing it beside hooking my voltmeter to the battery. Would hate to change the alternator if that wasn't the problem
Thanks Deano
Thanks Deano