Need "Multifunction Switch Instrument Panel" Diagram

grnmtnboy · December 7, 2016

Looking for some help.

According to this thread, if I have the WT package and the aux wires in the plug the truck should be set up for the switches?

This is what I have.

Truck his the wiring.

Replaced the original 4 switch panel with a 7.

I have installed the relay's and fuses in the underhood fuse block but I'm still unable to get power to the IECM (X61A). What am I missing, do those wires go to another panel (that needs relay's or something) before going to the underhood fuse block?

silveradosid · December 7, 2016

hope this helps you tooch

grnmtnboy · December 8, 2016

$_57relay.jpghope this helps you tooch

So I still need to use aftermarket board and relays?

Grumpy Tooch · December 8, 2016

I had all the wiring in the as well and my truck is and SLT not WT. The wires were in the , ALL of them in both plugs, but there were no fuses or terminals in the block for fuses under the hood. I had to tap into the wires as needed and use two of those relays above for each switch (one for the indicator, and one for function.

But is seems you have the correct switches on the board (latching) where AUX switches are. How did you get it exactly how you wanted it? Did you order from GM? I had to purchase two and combine to make the one i needed for my options.

For what it looks like what you have, make sure you have posts in the fuse block for the fuses you added and follow bulletin #110k from GM (in this thread somewhere). It will show you the correct fuse locations. And what you need to make this work if you have everything there as you stated. Read the bulletin, there is more you need than you think.

As far as where you would tap in to install your lights, i would not know mine was different.

grnmtnboy · December 15, 2016

I had all the wiring in the as well and my truck is and SLT not WT. The wires were in the , ALL of them in both plugs, but there were no fuses or terminals in the block for fuses under the hood. I had to tap into the wires as needed and use two of those relays above for each switch (one for the indicator, and one for function.

But is seems you have the correct switches on the board (latching) where AUX switches are. How did you get it exactly how you wanted it? Did you order from GM? I had to purchase two and combine to make the one i needed for my options.

For what it looks like what you have, make sure you have posts in the fuse block for the fuses you added and follow bulletin #110k from GM (in this thread somewhere). It will show you the correct fuse locations. And what you need to make this work if you have everything there as you stated. Read the bulletin, there is more you need than you think.

As far as where you would tap in to install your lights, i would not know mine was different.

I bought the switch panel from the local GM dealer. They looked at the list of switch panels that were offered and did a processes of elimination.

It appears that the terminals are in the underhood fuse block. I have tried putting the fuses and relays in but still unable to get power to the IECM (X61A).

Anyone have the part # for the relay's that are used in the 9L7 ROP?

grnmtnboy · December 24, 2016

Where did all the knowledge go?

Sffsks11 · January 19, 2017

I just purchased a 2017 Chevy Silverado and I would like to find out about these axillary switches that everybody's been talking about. I called the dealer they said the switches are available with the part number that bearded up describe but my question is if anybody has any information regarding on how to wire them to the OEM factory harness with the Stability Control and the cargo lamp, I would really like to install the switches in my truck. And also I like to know the fuse locations where the axillary wires go to if anybody has any images that would greatly appreciate it thank you

Crazyjoker77 · September 16, 2017

Gonna bump this thread with my experience hooking these up. My truck is a 2017 "special ops" it technically is a WT trim.

It came from the factory with only 2switches TC and Box Light.

I ordered the switch that has TC, boxlight, and aux1-4 for a total of 6 switches(gm part#23145158).

I also bought a bunch of 4pin 30A automotive relays that are mounted in the engine compartment.

I ran a 4wire cable into the cab through the existing grommet right behind the fuse box and it comes through in the drivers side foot well just left of the brake pedal. I found it easier to undo 3bolts holding a black plastic box in order to grab the wire but it should be possible without removing the box.

Upon removing the factory 2button switch I found there were already wires in pins 10,11,12,13 that matched the colour code for "upfitter content"

After seeing this I checked my under-hood fuse box and found it listed a spot for outfitter relays and fuses but nothing installed so I decided to ditch the factory wiring and go with my already ran cable and installed relays.(does make me wonder where those factory wires go?)

Crimped some connectors onto my 4wire cable and pushed them into pins 10-13 of the factory harness.(i had the connectors handy from a bulk kit and the crimp tool) I also separately insulated the factory wires I removed, since I didn't really know where they are going.

At this time I only have one relay hooked up but its working fine. All the switches light up when pushed even though there is no load on aux2-4.

Now my question is would the aux switches be able to handle 2 relay coils from one single switch? (I guess what I'm really asking is what is the amp rating of a single aux switch?)

smcgillis10 · September 27, 2017

For the factory wires, they should go to the passenger side fuse box inside the can. You'll see 4 spots for micro relays in there.

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Crazyjoker77 · September 27, 2017

For the factory wires, they should go to the passenger side fuse box inside the can. You'll see 4 spots for micro relays in there.

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I don't think this is correct at all, at least for the 15+ trucks. Even though I decided to just wire in my own relays instead of getting the factory setup to work I did look into it quite in depth and all the provisions are in the under-hood fuse box(X50A)

Switch Fuses 5Amp (only 2 of the 4 spots should end up being populated depending if you want them to work with the truck off.)

-22 Aux Switch1+2 battery power

-26 Aux Switch1+2 switched power

-27 Aux Switch 3+4 battery power

-31 Aux switch 3+4 switched power

Power Fuses 30A

-23 relay for sw2

-30 relay for sw3

-32 relay for sw4

-37 relay for sw1

Relays

-60,61,62,65

From my understanding the loads get hooked up to the Drivers side foot-well junction box(X61A) but require a new breakout harness to mate with the junction box. (P/N 19328970) Pins 1,4,14,20 are the upfitter "load" pins that are to be used.(corresponds to switch 4,3,2,1 respectively)

DJG · November 14, 2017

grnmtnboy, do you have the part number for the switch bank that you ordered from the dealer?

Bernard Sarazin · November 27, 2018

I'm trying to do this to my 2018 2500hd but I need exhaust brake switch

has anyone fully completed this

Bernard Sarazin · December 21, 2018

found the switch and installed only to find out I don't have the wires. so now that my next task.

sail hatan · December 31, 2018

I have a question. My truck has traction, cargo light, and hill decent. I bought a few 7 bank switch’s, one with traction, cargo light, and some other switch, that I replaced with a spare hill decent off the second switch bank. All 4 aux light up, traction and cargo works fine, but Hill decent doesn’t because I believe the wire is pinned in the wrong spot (the switch I got it from was in the 6th spot, and now it’s in the 3rd). Does anyone have a diagram that could help me? I just want to swap whatever wires around to make the hill decent work in the 3rd spot instead of the 6th spot. I would have left it in the 6th spot, but as most of you know the AUX switches are different on the circuit board than the truck option switches. Sorry if this is super confusing haha.

sail hatan · December 31, 2018

To touch further, it seems as though the hill decent always goes to the 6th set of pins. that's what it looks like on my 3 switch piece and my 7 switch piece. just curious as to which wires are hill decent. anyone have colors?