The wires are terminated under the hood. Go online [or maybe even the owners manual?] to see which wire connect to which numbered switch. Connect your accessories power wire to it. Hook up a ground and enjoy your accessory! Its that simple! The relays are already in place.

 

One my switches initiates 2 wheel drive low range. Another powers my driving lights - when on, the lights are switched on via the high beams, when off, the driving lamp can't be turned on. The other four switches are waiting for an assignment.

 

I do not have my truck just yet, but I will be hooking up some auxiliary lights and probably enabling high idle for the diesel on one of the switches.

 

front and back led lights & seic http://drc.hyd.com/public/P/parker/C...TO-TEC-163.pdf

 

i have one for my in bed fuel tank valve
and another for my onboard air compressor

used to use one for a light bar on the front of my 12..

 

1- Front Light Bar
2-vacant
3-Back bumper lights
4-Compressor for air bags
5-vacant
6-vacant

 

1- front facing led warning lights
2- rear facing led warning lights
3- aux back up lights
4- high idle
5- plow headlight switch
6- salt speader relay trigger

Hope the 2021's have 8 of them...lol

 

1-Drivers heated seat
2-Passenger heated seat
3-
4-Under carriage lights. I turn them on after I shut the truck off and the come on during remote start to light up the area as I approach the truck
5. Dash Camera.... I leave it on (always hot) when in public parking areas to record anyone hitting the truck while I'm gone
6-

 

 

no.. the 17's and up terminate the wires in the engine bay only. with a lot more wire available..
the fuses and relays for the switches are also moved to the engine bay.
all this is right by the hood hinge on the drivers side.


there are other wires provided on the passenger side, if you need outside back INTO the cab.

https://www.ford-trucks.com/forums/showpost.php?p=17498619&postcount=32

whole topic here
https://www.ford-trucks.com/forums/1...l#post16638283

 

 

yeh. the vast majority of additions are outside the cab..
moving the relays out from behind the dash to someplace you can get to them is a nice change, plus the wires are a lot longer then they used to be..

the wires to the upfitters themselves don't care any good level of power. they just toggle the relay.. (I always used the ground leg to trigger relays, so no power ran on the wire at all)..
I don't think they document where those wires go in the cab...

but you have power in the passenger footwell fusebox.. the PTO wire is on while running... (its NOT a passthru wire)

 

Pflugerville, nice
What onboard air compressor did you go with? Got any pics?

 

i have a viair compressor..

https://www.viaircorp.com/oba/oba-constant

on the 12 i had it under the right side attached to the chassis..tank followed by the compressor

on the 18, with the power running boards, I am going to have to move the tank above the spare, like others have done.
just got the truck 10/24, so not quite done with mods.. (aux tank in tho).