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"The grey one, or the purple o

"The grey one, or the purple one from the harness at the control - depends what shifter you have..."
 
"Usually grey is tach sender,

"Usually grey is tach sender, purple is the +12V from the ignition switch accessory pole."
 
"On the beautiful<[img]"http:/

"On the beautiful
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merc800/1969,which wire is the sig.,I'm guessing brown and what does the mercury switch do?"
 
"Noel, signal wire is almost a

"Noel, signal wire is almost always grey (or the wire that is attached to the grey (or yellow/grey stripe) on the rectifier.

The mercury switch is there so you can't start the motor unless it is in the "down" position - just a safety feature for both you and the motor - you won't lose your face to a turning prop and the motor won't kill itself from running with no water pumping..."
 
"Noel, On the older Mercs, bro

"Noel, On the older Mercs, brown was the tach signal wire. I do not know if a standard tach will work with that motor, you need to check the application data for the tachometer."
 
"Thank you, and I was watching

"Thank you, and I was watching a tach for this age of motor on ebay ,but didn't bid, ah well.And I've learned something new about the merc switch.Thanks again"
 
Brown is the correct color in

Brown is the correct color in those years. The brown wire must go to the charge rectifer. It needs to be moved off the switch-box.
 
"Òk now to appear really dumb,

"Òk now to appear really dumb,which brown?The one on the engine harness side or the distributor side and where on the rectifier do I put it/them? My user name isn't haventaclue for nothing.Your continued patients is very much appreciated and thanks again."
 
"Thanks,My excuse is that I ha

"Thanks,My excuse is that I have never seen the inside of an outboard motor before I got this one almost two years ago,I've had it in the water and it does go,but I'm not happy unless everything works right.I do appriciate all you people takng the time to answer my questions no matter how daft they are, thanks again"
 
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