Rpm gauge install ??

[DSMkiller]

Hi guys
I got this rpm gauge that I want to install in my boat, the engine is a mercury 650 3 stroke 1975 ignition system,

Is there a how to somewhere to help me out on witch wire i need to use!?
Thank

 

[louiefl]

Re: Rpm gauge install ??

http://forums.iboats.com/showthread.php?t=554697

I believe you are looking for info on how to hook up your tachometer (rpm gauge) on a 1975 Mercury 650, 3 cylinder, 2-stroke outboard. See the attached discussion. There should be a wire in the harness coming from the engine.