I have a just bought an evinrude elan 3 cylinder 35hp outboard, can anyone tell me if it is negative or positive earth/ground..?
A cheap $20 digital multimeter is an even better friend. With the motor running touch the red probe to what you think is the positive terminal. Black probe to the negative. If the DMM readout has a "-" at the front then they're the other way around.
Of course, if it outputs AC (like my old Mariner did) then it don't matter and you need to feed that current through a rectifier. Your DMM should tell you that as well.
I have an old 15 HP evinrude short leg hanging at the back of my yacht. Could some one tell me if it is right that you can buy an extention to make it a long leg outboard???