Mercruiser 4.3 removing oil from bores?

[Superjetjim]

5/6/7 are the wires .

6 red purple is 12 v + to dash
5 purple is ignition
7 yellow /red is to engage starter solenoid and thus starter

i took two pieces of 14 gauge stranded wire , twisted two ends together and put them in 6. Stick one of the other ends in 5 for maintained power to ignition. The other momentarily bump the starter on 7 Until running. To shut off pull out wire from 5.
of course you need the large + battery cable To starter and ground on back of block / flywheel cover to be hooked up and clean of corrosion…

I’ve made up a lead as suggested.

 

[Scott06]

I’ve made up a lead as suggested.

That is too fancy I just twisted them together. Either way throw the leads in your tool box on the boat if you ever have an issue out on the water with key or dash you can hot wire it...

 

[Superjetjim]

That is too fancy I just twisted them together. Either way throw the leads in your tool box on the boat if you ever have an issue out on the water with key or dash you can hot wire it...

Great idea, thanks!