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Mercruiser 4.3 Ignition Sensor replacement

F

Finius J Whoopie

New member
So I am doing a tune up on my 89 Mercruiser 4.3, and went to replace a very rusty ignition sensor. The new one (which is correct) has a whi/green, whi/red and ground. The one that I am assuming is original looks like it has a whi/green running to each of the posts in the back, with a whi/red on the left.

Any help in how to hook up the new on would be greatly appreciated. Unfortunately I need the boat this weekend, and I waited too long for a friend who "has a guy". Unfortunately the "guy" never got to it.
 
The wires on both sides (ignition sensor and timing module) are color coded then same...Plug and play.

Besides the new sensor has bullet connectors not ring terminals... So you may have to cut and crimp on new connectors on the wires from the timing module.
 
Agreed. ALL the green and whites together. Red and white on its own. Despite original hook up. Go figure.

Went from No Start to Go Start.
 
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