New stator, new rectifier/regulator, new Faria tach, and new sending wire from terminal strip to signal post on tach. Dial is set on 6 and still no reading on tach. Y could this be?? Johnson GT 150 1985.
Yeh... From ground to ignition on the back of the tach is 12.3 volts... When I turn the key the tach lights up and the needle jumps to 0. Just nothing when I start or run the boat? Is there a particular gauge of wire that needs to be used for the sending wire? I also put the sending wire on both sets of yellow wires where the rectifier and stator meet on the terminal strip like mr Reeves said, still no reading on the tach.
If you put a volt meter across the battery and ran the motor at a high RPM for awhile, what kind of voltage do you get ?? If you get about 14 volts that means your charging system is working. You could have a bad new tach.
Boat started at idle for bout 5 minutes n had 13.5.... When revving pretty high around 14.5... I'm on muffs so afraid to run it too hard... Also when the overheat alarm sounds if I rev the motor it goes off... I have 2 thermostats on the way because I think they're sticking. I really want that tach working tho so I can change prop but I can't figure it out
What do you mean "I also put the sending wire on both sets of yellow wires where the rectifier and stator meet on the terminal strip"? The sending wire should be on one or the other.
IS there a yellow with gray stripe wire? If so connect to that wire and see what happens. Also make sure you have the engine ground as the same ground for the tach. Otherwise it isn't making a completed circuit. You could also take the signal input wire from the tach and leave it loose at the engine terminal strip and touch the yellow wires on the terminal strip while the engine is running at idle and see if anyone of them read. One other thing is to turn the position switch on the back of the tach a few times to different settings to see if any of them read. Once you start getting any reading, then you can set to the proper setting...
