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I have a tech that's not working...I have power to the tech, but from what i u understand, I'm only supposed to have 2v from the sender wire...I have 12v...which is too high I believe...is the sender suppose to high voltage that high...
LoL, I have a 2001 Mercury 90hp....I call myself buying a tech from ebay...the only thing works on the tech is the light...so I guess I'm getting a good ground...I have power to the tech, I have 12v's...in a video i was watching, the sender which I'm assuming is my gray wire should have 2v's but its showing 12vs on my meter...so right now I don't know what is going on...any ideas would be helpful...
Does your tach - tach - tach :smile: have a rotary switch on the back for setting the number of poles? Flip it through all settings a couple of times. Sometimes the inside contacts get dirty/corroded and flipping it wipes the contacts.
Is the battery charging? Not sure on your Merc, but the tach signal comes from the rectifier/regulator on some. A bad rec/reg can disable the tach.
