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  1. M

    Unidentified part on my lower unit

    Hi all. I am new to boating, and noticed a broken wire going to this unidentified piece of my lower unit. The wire is a unshielded wire (like a ground wire). Hoping you guys can help me. Here are the links to the images of the same piece. http://imageshack.us/a/img440/4114/yc93.jpg...
  2. M

    12v power to boat with battery selector switch

    I am getting ready to wire a battery selector switch on my boat. I have a question about the 12v system (radio, pump, lights, etc.). I was going to run a lead from the output of the selector switch to my fuse box. What happens if I select my selector switch to BOTH??? How will that affect my...
  3. M

    1985 Mariner 90HP Outboard. How to test the temp alarm buzzer????

    My motor has a temp alarm buzzer, but my question is how do I test it properly??? I assume there are two tests. #1 Testing the buzzer itself (what is the best way to do this) #2 How in the world would I test the temp switch, without actually overheating the motor?!?!? LOL!
  4. M

    Question about the negative terminals on battery

    So I will be using a dual battery system. I will have each of the positive lines go to a transfer switch, so that is easy enough, but here is the problem. I am assuming that the proper way to wire the negative side is battery 2 negative to battery 1 negative to engine. I already have a thick...
  5. M

    Unidentified component in ignition circuit, and question about 12v wiring

    Hi all: New to being a boat "captain", a boat owner, and to this forum... So my father gave me a boat. It is a Sportcraft V-hull boat with a 90HP 1985 Mariner engine on it. The people that owned it previous to my dad used it for fishing, and didn't really care about the aesthetics of the...
  6. M

    90 HP Mercury/Mariner??

    Hi all.... I am new to this forum, AND new to boating. My dad gave me a boat/motor/trailer that isn't in bad condition, but does need a little bit of work. So time to start at the beginning... How can I identify what year motor I have??? I could not find any serial numbers on the inside to...
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