Re: Please help with choosing gauges
I prefer electric gauges. The mechanical water temp gauge requires a large hole in the firewall to get the sender bulb through. Mechanical oil pressure puts engine oil in the interior with the risk of a leak. Electric gauges are simple to wire. Basically, a wire to the sending unit, a wire to +, and a ground. Volt meter is just + and ground. Much of the wiring can be "daisy chained" from one gauge to the next, i.e. a pos wire from the fuse block to gauge A, from A to B, B to C, and C to D. Same with the ground. Each will need it's own sender wire, except voltage gauge.
Illumination is the same for mech or elec. You'll need a + coming from the inst lps spade on the fuse block, and a ground. Daisy chain those also.
You can do it. Invest in a decent soldering iron, some ring terminals, female spades, 12 or 14 AWG wire and heat shrink tubing. All very inexpensive. Radio Shack
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