1987 mercruiser 5.7 ski

[moneydrain]

i have a 1987 mercruiser ski that i have upgraded the ignition from points to electronic. the old coil was external regulated through a resister wire. the new coil i bought is internal regulated. my question is if i follow the manual on replacing the resister wire that feeds the coil from the exciter wire on the altenator and use a regular wire instead of a resisted one will the exciter feed 12 volts or will it be what the altenator is putting out. i really don't want to burn up a $100 coil because of my ignorance. sorry for long post, thanks for your help.

 

[Bondo]

Re: 1987 mercruiser 5.7 ski

or will it be what the altenator is putting out.

Ayuh,... The alternator is Regulated power...

 

[moneydrain]

Re: 1987 mercruiser 5.7 ski

so the 14 volt output is only fed through the orange wire back to the battery, and the purple exciter wire is a regulated 12 volts. i know i may seem dumb but this is my first boat and my first time changing up wiring. just thought it would be better to ask and know for sure before i did something wrong

 

[Bondo]

Re: 1987 mercruiser 5.7 ski

Ayuh,... Regulated voltage between 12v, 'n 14v is what is Expected....

The coil ain't gonna burn up in that range...

 

[moneydrain]

Re: 1987 mercruiser 5.7 ski

thanks for your help Bond-O.