Re: Optimax issues
when the 20amp fuse blows its cause of a dead short somewhere, thats the initial protection on the eletrical side of an opti. there are other fuses behind it as well. what size opti is it and what year? the easiest way to check the key switch is to use a meter and check for continuity. Dont know how your boat is laid out but I have used the existing harness and switched it to the other side before to rule that out. Most optis 07/08 newer use the 14pin connector its pretty easy to fish out from the side cover if you have slack you can unhook bad side and try w the other side key/harness and then you know for sure
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