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Installing a tach

Posted: Wed Jul 25, 2018 7:59 am
by guy48065
My current pontoon (96) and previous (79) have no gauges at all. I have a fish locator that can tell me my speed but I wanted at a minimum a tach & warning lights.
In order to make this work I first had to replace the electrical cable that runs from the console to the outboard. The PO chopped all the "unnecessary" connectors off when the carpet was replaced.

Once I finished that I then had to bore a 3-3/8" hole in the dash for the tach. Why do they make them an odd size like that? I could borrow a 3-1/4" or 3-1/2” hole saw but instead I used an adjustable woodworking "flycutter". I went VERY slow and carefully so it wouldn't skitter around or smack my knuckles and the hole came out perfect.

I think I also need tilt/trim & volt gauges.

Now that I know my speed AND rpms I see I'm almost 1000 rpm under max at WOT. Now I have to read through all the "prop selection" threads!

Re: Installing a tach

Posted: Wed Jul 25, 2018 3:32 pm
by bansil
Do you have a link for that tach?

Re: Installing a tach

Posted: Thu Jul 26, 2018 9:19 am
by guy48065
I bought it off eBay, $100 new but no box or instructions. It's a Teleflex "Lido" for Johnson/Evinrude with System Check lights. Mod. 64477F.
I'm pretty sure Sierra 64477FP is the same gauge.

Re: Installing a tach

Posted: Mon Aug 13, 2018 5:22 am
by Brad750
Nice install!

Re: Installing a tach

Posted: Tue Aug 28, 2018 9:13 pm
by Henpecked
That’s a good looking gauge background. Is that leftover flooring? It goes well with the gauge.

Re: Installing a tach

Posted: Wed Aug 29, 2018 6:41 am
by guy48065
That's the original dash panel. Supposed to look like fiberglass I guess.