tach and or wiring harness for tach

[rosser1]

looking to find the wiring for a tach and or all, that will go on a inline6 mariner, 90 hp. looks like a 3 prong plug. thanks for the help

 

[rosser1]

Re: tach and or wiring harness for tach

if i buy a new tach will it work with my motor?? how to hook it up and does it come with wirinh harness. I have a place at throttle and key switch to plug in a tach, but very unsure what to do, and it get it to work properly.

 

[Chris1956]

Re: tach and or wiring harness for tach

Three prong plug on MerControl is made to power tach. Choose an aftermarket tach for a merc/mariner OB, and you should be fine. The early Mercs (likely older than yours), used the switchbox to power the original merc tachs. Check the brown wire (old mercs) or the grey wire (80 and newer Mercs) to see that it is connected to one of the yellow wires at the rectifier. if so, you are ready to go. if not, move it from the switchbox to the rectifier. I would ask a Merc dealer for the molded connector for the tach.

 

[rosser1]

Re: tach and or wiring harness for tach

ok that is what i was wondering, thanks for the help. and clearing everything up. thanks again