Today I went to hook up a Tac on a project boat and motor (1984 115 merc) I have been working on and when I hooked it up I got a reading of 1500 rpm ..... motor was running much lower then that so I disconnected wiring, removed the tac from the console, re-hooked up with 3 new shorter wires (+ and - to straight to battery) and the third to the rectifier against the yellow wire running from the Stator. Started motor up and still reading 1500 RPM ........ Disconnected tec, dug out another tac I had in a shed installed and same results ...... So next thing I did was switch the wire from the tac to the other pole on the rectifier and against the other yellow wire from the Stator , fire it up and tec reads 800 rpm. I swap tec out to the first one I had tried and also reads 800 RPM.
Swapping around stator wires and tac wires to different combos on the rectifier show that when hooked up to one of the yellows off the stator I get a good reading, off the other I get a bad ...... during the whole process of installing and testing the red wire to the + pole on the rectifier was not connected at all. So question is ...... is my stator going bad? motor runs good right now, idles fine good hole shot and top end (red wire to + pole on rectifier still not hooked up yet ... not there yet on build)
Swapping around stator wires and tac wires to different combos on the rectifier show that when hooked up to one of the yellows off the stator I get a good reading, off the other I get a bad ...... during the whole process of installing and testing the red wire to the + pole on the rectifier was not connected at all. So question is ...... is my stator going bad? motor runs good right now, idles fine good hole shot and top end (red wire to + pole on rectifier still not hooked up yet ... not there yet on build)
