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Sierra Voltmeter gauge rises with throttle… hmm…

O

Orr84

New member
Hi everyone,

I have a 1989 Mercury 115 2 stroke 4 cylinder in a 1991 Renken 1600… All the gauges were broken or not wired with the boat when I purchased it. I’ve managed to wire everything correctly EXCEPT for the Voltmeter. It reads just under 14 volts at idle but will rise and fall with the throttle… so If I’m pinning it, the voltmeter will read 18 volts…

What have I done? And where should I start lol

Cheers And thanks for your help in advance!
 
if you are seeing 18 VDC at the battery with the engine RPM elevated, I'd think the voltage regulator isn't working...
 
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