intermitant tachometer

[jhdean]

I have a 1981 Trojan tri cabin with twin 350ci Crusader gas engines. The tachometers seem to be original equipment and don't work very well or not at all. has anyone replaced the tachs on an '81 vintage Trojan? It also have an older model engine synchronizer guage installed but don't whether to trust that either, any ideas?

[prowlersfish]

Most likely Beacon marine would have tach . check all you connections also I have seen synchronizers cause tach issues .