Tachometer install, help needed.

Jacob J

Cadet
Joined
Jun 13, 2009
Messages
25
Hello all

First of all, I am sorry if this is posted in the wrong place, but it seemed the right place for me. Please move this topic, if it is misplaced.

Now. I have a mercury 25hp bigfoot 4-stroke from 2001. To that engine I have connected a quicksilver control box like this one:

http://www.boatpartsandspares.co.uk...ges/mercury-mariner-remote-control-1430-p.jpg

Now I want to connect a tachometer because I have read that you need to check the rpms at full throttle to see if you got the correct prop on the engine. I think the engine is not at full rpm, so it would be cool if I could get the last top speed out of it.

As you can see on the picture, there is a piece of wire with a plug on it comming out of the control box and close to the end of that plug there is a brown wire. Am I right in the assumption, that this wire is the tacho signal? I am new to this boat electronics, so please have that in mind if I ask stupid questions. But if we assume that this is the tacho signal, and please correct me if I am wrong, then I hook that up to a tachometer and connect the tachometer to 12volts and ground and it should be all alright?

Will any tachometer for outboard engines work, or does it have to be a mercury gauge?

Thanks if advance for your time

/Jacob
 
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