Custom wiring

Lpaulk92 · Jan 21, 2016

Hey everyone, I have a 97 Ford Ranger and would like to have a little more travel in between fill ups. So I have been looking into fuel cells when my fiance asked me what my plans were for a 96 blazer in my backyard. Then I realized, the blazer has a 18 gal tank under it that isn't going to do anything besides sit there. So my question is would it be possible to wire in the tanks sending unit as a aux tank to my ranger? Would like the gas gauge to operate on both tanks to. I appreciate any help possible. Thanks in advance.

cp2295 · Jan 21, 2016

Yeah sort of like the 3/4 and 1 ton fords of that era. Look up a wiring diagram for those rigs, my dads truck had that and when hed switch tanks the gas gauge would shoot back up worked nice

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Lpaulk92 · Jan 22, 2016

sweet. ok thank you.

JoshT · Jan 22, 2016

Yes and no.

Yes, you can wire and plumb in the blazer tank as an auxiliary, either refilling the main tank or feeding the engine. Might take a little work, I've got no idea how the Chevy tank is set up. Return or returnless and fuel pressures you'll have to figure out.

No, it will not work with your gas guage. The resistance ranges that Ford and Chevy use to indicate full and empty are different. Connected to the Chevy sender the Ford gauge would probably never register over half full, and you'd be refilling it around half tank.

RonD · Jan 22, 2016

One of the reasons you don't see dual tanks that often on newer vehicles is the EVAP system required for passing emissions tests.

Even if your area doesn't do the tests the computer will still turn on CEL if it gets messed up.

You can certainly install another tank and an electric or manual control, '97 has Return Line, so you need a 6 port switch, 2 for each tank and 2 to engine.

The tank switch is just 12volt ON or 12v OFF for the 2 positions

The electric dash mounted switch can control the gauge change and send the 12volts to tank switch, but you need one made to do that.

Yes, as said above you will need a Ford sender, from 1989 and up.
'97 needed 35-40psi from fuel pump

Custom wiring

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