Hi All;<br /><br />I'm back at it again, sold my two big Zodiacs (both had Mariners, one by Yamaha and one by Mercury) both excellent engines by the way.... anyway<br /><br />I bought an older 24 ft sailboat and she has an 8 hp Mariner hung on the stern, its a Model 8M ser # 677-377768 and this website says its a 1984 http://www.marinshopen.se/ <br /><br />Anyway i'll try to keep this long story short 
<br />There are two black electrical wires hanging out of the front of the engine and with the engine running these will light up a test light and it gets brighter as you increase the engine speed....<br /><br />Now the long awaited question......will this power help to charge my battery and if so how do i wire it up, would i need a diode in there somewhere and how do i tell the positive from the negative, both wires are black...<br /><br />Thanks all regards;<br />Dave
<br />There are two black electrical wires hanging out of the front of the engine and with the engine running these will light up a test light and it gets brighter as you increase the engine speed....<br /><br />Now the long awaited question......will this power help to charge my battery and if so how do i wire it up, would i need a diode in there somewhere and how do i tell the positive from the negative, both wires are black...<br /><br />Thanks all regards;<br />Dave