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Old 12-24-2015, 11:10 PM   #2
dutchmanz
Knuckle Buster, Instructor
 
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Join Date: May 2010
Location: Pantego, NC
Posts: 562
Re: Two fuel senders in series

Your gauge should read 0-90 ohms. 90 being full. A dash mounted switch would be your easiest option. The senders in series would not work like you are suggesting without damaging your gauge. GM did use a module on the 3500HD trucks to average both tanks and send the correct value to the gauge. One could probably be used to do the same for your truck. It was only a 2 tank system tho.
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