Tach not working at all

[nebraska_woody]

Hi.. another dumb question for anyone who can help. My tach is not working. My motor is a Johnson GT200... 1989. when I first had it installed on my boat, it worked fine, and then about 3 months later or so, it stopped. I first thought it was a faulty tach that I bought, but I replaced the face (leaving the wiring in tact) only, but still no avail. I'm unfamiliar with the wiring that comes from the motor, so I dont know what to look for back at the motor's end to see if any wires came unhooked or loose. NOTE: the lights in the dial still light up though. on a separate dial, my "trim dial" doesn't register properly either. does that work off an electronic type sending unit, or is that most likely a mechanical piece that is broke? Simple questions from a simple mind, I know, but any information would be helpful to this novice boat mechanic.... thanks for any help.

 

[mellowyellow]

Re: Tach not working at all

probably a blown rectifier/regulator. I would test<br />that first.<br />good luck,<br />M.Y.

 

[Dhadley]

Re: Tach not working at all

Ditto. If left unfixed and it is the reg/rec it could possibly cause the wires to catch on fire. <br /><br />If it is a bad reg/rec have them vent the block when they replace it to avoid a future repeat.<br /><br />Good luck!

 

[nebraska_woody]

Re: Tach not working at all

Hey guys, can any of you tell me what the rectifier/regulator does on the motor?

 

[zj-jeepster]

Re: Tach not working at all

woody,<br />from searching these forums, I gather that a rectifier converts AC voltage put out by the stator into DC voltage so the electrical system can utilize it. a regulator controls the amountt of DC current/voltage as not to excede certain voltage and amps. somebody please check my findings, I'm fairly new to this.

 

[Hooty]

Re: Tach not working at all

The jeepster is pretty much right on.<br /><br />c/6<br /><br />Hooty

 

[zj-jeepster]

Re: Tach not working at all