Hello everyone! Haven't had to post in a while (good thing right?) but got another issue I would like to get a little input on. Currently have a 1988 Crusader270 (350cu) with a bad alternator. Of course some ding bat had put an automotive type on it. Went to get a marine alternator to replace it but ran into a question. The original sevice manual lists Prestolite or Motorola 2 wire alternators. The automotive one on there now is a 3 wire. The guy at the boat shop said use a one wire. After a little research found that the one wire is always on, with the battery on that is, and after a period of time would run down the battery. The three wire uses a battery sensor lead that tells the alternator how much to charge. This should come from near where most of the accesories pull from (ignition) and not at the battery so you allow for voltage drop and only turn on the alternator when the switch is on. Am I barking up the right tree? Looking to go with a Delco marine 105 amp 3 wire. its not the 3 ear mount like OEM but will fit the current set up. Whatcha think??? Capt Al