Completed Project: Dual Fuel Gauges w/Tach

[rich weyand]

I didn't like one gauge for two tanks, and I wanted a tach. Done.

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[highdesertrange]

hey that's pretty cool. do you still use the factory switch to switch tanks? highdesertranger

 

[rich weyand]

hey that's pretty cool. do you still use the factory switch to switch tanks? highdesertranger

Mine didn't have dual tanks from the factory. Somewhere along the line, someone put a 1987 box with dual fuel doors on it so I put in the dual tanks. I used the Pollak motorized valve instead of the solenoid valve, and put the DPDT reversing switch for the valve in a pre-existing hole in the dash below the radio. I bypassed the valve with the sender wires and took both sender wires all the way to the panel for the two gauges. Used the gmsports.com combo tach/fuel gauge, which plugs right into the "no tach" instrument basket. A little mechanical munching on warning light shrouds to get it in, but no wiring changes.

 

[GreaseDog]

Clean install Rich. Does that tach come with a wiring harness to run the tach?

 

[rich weyand]

Hey there, GreaseDog. Wondered where you got off to.

Since it plugs directly into the existing fuel gauge sockets in the back of the instrument basket, it already has +, GND, and sender. They give you the one extra wire you need, the tach wire to the TACH connection on the distributor.

The unit is from gmsports.com here: http://www.gmsports.com/content/new-tachometer-1973-1986-chevy-and-gmc-trucks

Here you can see how they put some dummy studs in a piece of plexiglas and wired them to the fuel gauge so it would plug right in to the existing no-tach basket. It also came with the tach filter, as you can see here.

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[Green79Scottsdale]

Nice to see you bring Working Girl over here Rich! Welcome! I know you from both 73-87 and FSC, but the vast majority of my time is spent here. I much prefer the atmosphere here!

 

[bucket]

I like this idea. But know this has me thinking, it would be cool to have dual fuel gauges off on the left and then run an oil pressure gauge in the tach face. That way the fuel gauges could match.

 

[RetroC10Sport]

You could run a third gen tach with the oil pressure gauge then.

 

[bucket]

You could run a third gen tach with the oil pressure gauge then.

Yup, I might even have one or a few sitting around.

 

[RetroC10Sport]

Ya think?

 

[rich weyand]

There is some fab involved in mounting the small fuel gauge, because the proper bosses are not there in the no-tach instrument basket. Some threaded standoffs, some angle cuts, and a little trial and error is involved to get a secure mounting, but it's not too bad.

 

[roadwolf]

That s look nice.

when i saw the title of the subject, i though it was a dual gauge like this

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if it is possible to do the same with the speedometer as the tachometer, it would be good too

 

[bucket]

That s look nice.

when i saw the title of the subject, i though it was a dual gauge like this

You must be registered for see images

if it is possible to do the same with the speedometer as the tachometer, it would be good too

Where do you buy one of those dual gauges?

It wouldn't work on the speedo because the odometer mechanism takes up that space.

 

[roadwolf]

most are aircraft 's part or sometimes boat


http://store.wagaero.com/index.php?cPath=15_17

http://www.sigmatek.com/pages/prod_description/PD_ENG_dualfuel.html

you're right, i didn't think about the odometer for the speedo