Attn: Yamaha Mechs. (Water temp Gauge) install

[77SceptreOB]

Guys,

I'm wanting to install a Water Temp. Gauge. I've got a 225hp V-6 Yamaha (1989). See pictures below. It appears and I have read that Yamaha has conveinently put (2) bosses for future use one on top of each head. I just want to make sure these are the ones. Each head also appears to have a "thero-switch" that sents a signal regarding the temp to the control console / warning horn. I don't want to mess with those. I figure I should use the top "bosses" to put the sending unit(s) in. Then I will run dual wires up to the dash, then install a toggle switch before the gauge so I can monitor both cylinder banks independently.

What do you all think??? Does this seem correct??