BackEastDon
Member
2002 Mercruiser 5.0L with Thunderbolt V ignition and Faria combo Tach, Oil and Temp gauge. Boat sat all last season but given the shutdown, I've been pretty busy upgrading and catching up on maint. Finally started the engine today and everything is working great except the tach. Circuit should be a simple single wire pulse from the ignition. Can I use a function generator to test the gauge? I have a couple that are sine or square wave with hopefully enough output to drive the gauge. Got an O-Scope I could dig out and check what is coming from the engine but suspect it is the gauge.
Figured I'd ask first before attempting. Also, if it is the gauge, what are my options to replace?
Figured I'd ask first before attempting. Also, if it is the gauge, what are my options to replace?