Zach's '01 Build Thread

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Dec 21, 2021 | 12:27 PM

#16

Sous

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Joined: May 2014

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From: Lake Hartwell, GA

Below is a link to a full write-up of how @ZachT93 accomplished the ESOF rocker switch modification. Link included for future reference and search results.

Link: https://www.ford-trucks.com/forums/1...l#post20206236

Dec 21, 2021 | 09:22 PM

#17

aawlberninf350

It's a Van Gogh

Joined: Feb 2010

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From: Elk Grove, CA

I think that connector under the dash is for the optional Auxiliary Idle Controller unit, aka AIC.

Here's a thread with more info.

Dec 23, 2021 | 10:02 AM

#18

ZachT93

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When you take out the Air Intake Heater relay, what needs done with all the extra wires?
I understand what logic must be done to activate the relay from the truck's computer, since I never use the parking brake the computer should never try to turn on the relay and no codes would be thrown. So, what should be done with the extra wires? I get that one of the wires needs a resistor wired in, just to make sure the DTC is never thrown, and that a ground can be eliminated. But what should, or can, be done with the supply power wire? Has anyone eliminated it entirely from the harness?

Dec 23, 2021 | 10:09 AM

#19

FordTruckNoob

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From: Henderson, NV

Yup. Remove the supply wire going from the AIH Relay to the AIH.

Dec 23, 2021 | 10:13 AM

#20

ZachT93

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Sorry, the supply to the relay is what I was referring to. See green circle above

Dec 23, 2021 | 03:45 PM

#21

RacinJasonWV

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Joined: Jul 2017

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From: WV

I removed the wires from AIH to relay and ground but left the supply wire going to the relay in place. I didn’t see an easy way to remove without causing a loose hot wire needing taped up so figured the relay was a safe ending point.

Sorry, can’t help you on the resistor side of things. It just throws a soft code on my truck so I don’t worry about it.

Dec 23, 2021 | 06:26 PM

#22

ZachT93

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I was looking at the body builder's guide for information about the Aux. Idle Control plug that @aawlberninf350 mentioned, and I saw two of the wires are a CAN + and CAN - line. Does anybody know if there is information available about Ford's CAN system on our trucks?

Jan 6, 2022 | 09:56 AM

#23

ZachT93

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So purchased this relay box / fuse holder for the truck. I'm going to use it to do the headlight upgrade that was recommended.

It included 6 relays, 6 fuses, and all the roll crimp connectors for $30; I think I got a good deal out of the buy.

I will use one of the relay slots for the 2Lo mod that Sous has described in a separate post. Then the other three relays will be available for future upgrades.