I have searched and read the previous threads still clueless. I have a Yamaha multifunction tach that reads 0 at all times. New boat to me. Rebuilt the LCD. 1995 vx250 Carb the year before the ox66 fi. Just bought some used gauges 2 tacs seller said both worked but faint. Both of those show also 0 (RPM). Thought it was a bad Tach now I am pretty sure that all three gauges read the same that's not it. Disconnected the three green wire harness from coils or stator. Shows AC volt to ground on all three green wires. Hz too. Both increases with RPM. All three green wires to gauge reads 0 on gauge. So where can I pull a good Tach signal on motor? So what next?
just want to figure out how to troubleshoot.
Local shop who I have used before just said bring it in and would not discuss it. unfortunately that's difficult.
Is the CDI bad? The engine runs fine. can I bypass that for the tach previous post seemed to say that was possible but I must have not been using the right wires.
going to buy the shop manual but don't know that will help
thanks for the help
just want to figure out how to troubleshoot.
Local shop who I have used before just said bring it in and would not discuss it. unfortunately that's difficult.
Is the CDI bad? The engine runs fine. can I bypass that for the tach previous post seemed to say that was possible but I must have not been using the right wires.
going to buy the shop manual but don't know that will help
thanks for the help
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