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Old 09-18-2020, 04:19 PM   #1
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Join Date: Aug 2016
Location: SF Bay Area
Posts: 24
2001 E-350 6.8L V10 Electrical Isolation Questions

Hi All,

I've done loads of searching, and have filled my brain with so much information about electrical systems - that I feel like I need to lay out a few of my questions and get some feedback. Please take a moment to review a few (hopefully simple) questions...

The van is a 2001 6.8L V10 with the Ford factory "heavy duty auxiliary battery" option; so I've got a starter battery - and a frame-mounted auxiliary battery.

I've procured (4) Lifeline 6v AGM batteries to wire in series/parallel, so I'll ultimately have a sizable 12v AGM bank for "house" power.

I plan to augment the vehicle/alternator charging system with (2) roof-mounted 100w solar panels (and appropriate charge controller).

I plan to keep the alternator charging system simple, by utilizing the stock relay (that's mounted to the underside of the main battery tray).

My questions are:

1) Does anyone know the specs or amperage rating of the relay/solenoid that comes with the factory auxiliary battery system?

2) Will it be able to be re-used in my electrical system, or would it be prudent to upgrade the solenoid?

Thanks in advance for your help!

2001 E350 Cargo V10 Quigley 4x4 Voyager Top
DIY build underway
ApacheCheef is offline   Reply With Quote
Old 09-18-2020, 11:09 PM   #2
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Join Date: Jan 2009
Location: Corvallis, OR
Posts: 4,802
Factory six batt charge circuit is only 40 amps. And maybe 8 gauge wire. For what you want to do, better off starting over with bigger components.
2000 E450 dually V10 wagon
carringb is online now   Reply With Quote

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