I have a question about the electrical on my 1993 Evinrude 48 hp SPL. I rebuilt the lower end and put the two units back together. I went to start my O/B. After some adjustments and a little Ether, it fired up and ran great.<br /><br />However after sitting in the damp cool air overnight I couldnt get it to fire. I checked all connections and wires. Came to a conclusion that the battery needed to be replaced. I purchased a shinny new battery and was set to go. I asked a friend to install the battery while I searched for some tools.<br /><br />My mistake was not to double-check my friends work. He installed the battery backwards. I flipped the switch and POP!, accompanied with a little smoke and the wonderful smell of burnt electrical.<br /><br />According to the manual** I may have blow the Diodes. *This is all the manual said in regards to this problem. Verify the battery cables have been PROPERLY connected. If the battery has not been connected correctly the diodes in the circuit will be blow instantly. Brilliant move! 
The manual, did not give a description of where the diodes are located, nor did they give a replacement part number.<br /><br />Can anyone give me some guidance? Can this battery flip issue affect anything else? I.E. the rectifier, coil?<br /><br />Thanks,<br /><br />KiHo<br /><br />* ELECTRICAL 6-14 (Second Paragraph down, first column)<br />** Johnson/Evinrude #1304 Outboards 1990-95 Repair Manual
The manual, did not give a description of where the diodes are located, nor did they give a replacement part number.<br /><br />Can anyone give me some guidance? Can this battery flip issue affect anything else? I.E. the rectifier, coil?<br /><br />Thanks,<br /><br />KiHo<br /><br />* ELECTRICAL 6-14 (Second Paragraph down, first column)<br />** Johnson/Evinrude #1304 Outboards 1990-95 Repair Manual