Adding dual fuel tanks

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Dec 24, 2016 | 01:28 PM

#16

86boss300

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Joined: Dec 2016

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I'm sorry you guys are right about the fuel pump. The different setups are getting a little confusing.

Any way. If the wiring is in place i add a new valve on the frame. Hook up a new tank. And make sure all wiring is intact.

now i assume the sending units connect to the valve and the valve sends the signal to the cluster. So obviously the wiring will be tampered or.

or not. The gas gauge doesn't work anyway. But I'll figure that out when i get that far. I'll break out the wiring diagrams after everything is back in working order.

Dec 24, 2016 | 04:11 PM

#17

Gary Lewis

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Joined: Jul 2010

Posts: 32,875

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From: Northeast, OK

There are only two things in common between the sending units and the solenoid/valve. They are both controlled by the switch on the dash, albeit by separate sides of the switch so they only share the switch mechanically. And they both use the same ground. All of that is shown here: Fuel Tank Selector & Gauges - ???Gary's Garagemahal

Dec 24, 2016 | 04:26 PM

#18

ArdWrknTrk

pedant

Joined: Jan 2008

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From: EXTREME southwest CT

Quote:

Originally Posted by 86boss300

I'll break out the wiring diagrams after everything is back in working order.

How do you intend to get "everything back in working order" without sorting out the wiring first?

Dec 24, 2016 | 07:56 PM

#19

Franklin2

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From: Virginia

Quote:

Originally Posted by 86boss300

I'm sorry you guys are right about the fuel pump. The different setups are getting a little confusing.........now i assume the sending units connect to the valve and the valve sends the signal to the cluster. So obviously the wiring will be tampered or.

The 460 trucks did work that way, the valve switched the sending units electrically and switched the plumbing also. But you have the simpler setup, your sending units are electrically switched by the dash switch, your 3 port valve will only get a signal from the dash switch and switch the plumbing.

Dec 25, 2016 | 09:40 AM

#20

86boss300

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Thank you all for your patience and help. The wiring diagram really helped. I think i finally understand how this system works. The different setups for different years definitely confused me so thanks for clearing this all up for me. I'm confident I'll be able to get my dual tanks working again.
thanks again.

Dec 25, 2016 | 10:05 AM

#21

Gary Lewis

FTE Legend

Joined: Jul 2010

Posts: 32,875

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From: Northeast, OK

Welcome. The guys on here are incredible and have certainly helped me. So, keep coming back and I'm sure they'll be able to help you get things sorted.