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2014-2017: DL8, DL3, Towing Mirror Upgrade – Mirrors Explained

pgamboa

By pgamboa
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Blankmantn Enthusiast

Blankmantn

Posted
Posted

Ok. Really confused. Pin #3 does not operate puddle lights. Also confused that my parking lights come one when I start truck with remote then turn off after a few seconds. Is this why I need the rzy harness to make them work all the time?

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pgamboa
pgamboa

All,   Due to the overwhelming interest in folks wanting to upgrade their mirrors, I wanted to start this thread, hopefully, with all the information pertaining to the process of upgrading y

pgamboa
pgamboa

For those that are curious on the work involved with the harness modification, I've created and uploaded a Time Lapse Video of the process. The original post has been updated and the video link is at

Black Denali Canada
Black Denali Canada

Here are mine       Sent from my iPhone using Tapatalk

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pgamboa Senior Enthusiast

pgamboa

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9 hours ago, Blankmantn said:

Hi....new here. I have an early 2015 2500 hd Diesel ( pre 8/14). I have black camper style mirrors with glass turn signal, power adjust top and defrost ( heat). I bought upgraded new style mirrors. No power fold and no temp sensor since pre 8/14. My question is, is the only harness I need is the rzy harness to make cargo and running lights work? My new mirrors came with puddle lights but they have a separate wire for them. Is there a way to wire into existing plug for those? I just checked my harness and I have a pin in #3 and #41. No pin in #9 or#11. I assume I can connect my puddle light to wire on #3. TIA

 

4 hours ago, Blankmantn said:

Ok. Really confused. Pin #3 does not operate puddle lights. Also confused that my parking lights come one when I start truck with remote then turn off after a few seconds. Is this why I need the rzy harness to make them work all the time?

Ok.  Let me try to explain the best way I can...

 

Many folks get the term "puddle" lamp confused for what it actually is.  The Puddle Lamp, in how GM intends its behavior, is a light that shines downward (toward the ground).  This light generally only comes on at night - when you unlock the doors with key or open your door.  It is intended to light the ground for puddles of water.  Many will use the term "puddle" for the amber forward shining light.  That light is a Running Light.  Sometimes, it's referred to a Park Lamp or Marker Lamp.  The White LED light that shines rearward is the Cargo Lamp.  Sometimes referred to as the Courtesy Light, Reverse Light or Flood Light.

 

Now - the puddle light circuit on pin 3 of the door harness - Is a Puddle Light circuit. 

 

Pin 9 - is the Cargo Light, Pin 11 is the Running light.  These two circuits will be absent in the body side of the connector. 

 

Pin 41 is the turn signal. 

 

The RZY Harness is a harness by GM that essentially is installed to the missing pins 9, 11, and 41 slots.  In ALL cases of trucks I've worked on and observed, pin 41 has always been present...So that wire gets taped off and unused in the RZY.  

 

Pin 9 - Cargo Light lands in the X61A Junction Box in the driver side footwell while Pin 11 - Running Lamp goes through the firewall and into the X50A Fuse Block.

 

I hope this helps.  Without knowing more about the new mirrors you have, it's hard to say what the next steps are.  If you have a model # of the mirror or link to the mirror, that might help me understand what you have and what your next steps would be.  Also, if you have part #s to your factory harnesses, that would be helpful as well.

 

Thanks,

 

Phil

 

Blankmantn Enthusiast

Blankmantn

Posted
Posted

Thanks Phil. I got the puddle lights working tonight. I am assuming the rzy harness will give me pin #9 and #11 which will give me running lights and cargo lights. Everything else is working great now so far.

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pgamboa Senior Enthusiast

pgamboa

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2 minutes ago, Blankmantn said:

Thanks Phil. I got the puddle lights working tonight. I am assuming the rzy harness will give me pin #9 and #11 which will give me running lights and cargo lights. Everything else is working great now so far.

That's correct.  Sounds like you got a Trail Ridge mirror from 1A Auto or AM Auto?

DenaliDH Enthusiast

DenaliDH

Posted
Posted (edited)

Phil - I just found this thread after researching towing mirror upgrades. I have a 2018 Sierra Denali ultimate with the powerfold std mirrors. As I said, I want to upgrade to the OEM towing mirrors. I’m going with the oem towing mirrors as I want to also add the intellihaul 3 camera system with the mirror mounted cameras. I’ve read several threads about what I need to have all the mirror functions I have with my current mirrors work (heat, glass signals, marker lights, cargo lightspower fold, memory, and reverse tilt - I understand I will lose the puddle lights with the oem towing mirrors, correct?) and I’m even more confused. Can you tell me what part number oem mirrors I need and what door harnesses? I assume that sine I have an Denali ultimate, I have all the required wires in the car side harness?

 

thanks in advance - your research and knowledge is amazing!

 

Edited by DenaliDH
pgamboa Senior Enthusiast

pgamboa

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9 hours ago, DenaliDH said:

Phil - I just found this thread after researching towing mirror upgrades. I have a 2018 Sierra Denali ultimate with the powerfold std mirrors. As I said, I want to upgrade to the OEM towing mirrors. I’m going with the oem towing mirrors as I want to also add the intellihaul 3 camera system with the mirror mounted cameras. I’ve read several threads about what I need to have all the mirror functions I have with my current mirrors work (heat, glass signals, marker lights, cargo lightspower fold, memory, and reverse tilt - I understand I will lose the puddle lights with the oem towing mirrors, correct?) and I’m even more confused. Can you tell me what part number oem mirrors I need and what door harnesses? I assume that sine I have an Denali ultimate, I have all the required wires in the car side harness?

 

thanks in advance - your research and knowledge is amazing!

 

You are correct in that you'll lose the downward shining puddle lamp.  If you went with the aftermarket set from 1A Auto/AM Auto, they have a set with puddle lamps, support memory along with the rest of the features found on an OEM GM DQS Mirrors. 

 

As for part #s, they change pretty frequently.  So I stopped keeping track of them because there are so many.  

 

I ended up setting up an arrangement with a GM Part Supplier to get these new from GM, drop shipped.

 

DQS - Power Fold GM Tow Mirrors, $1058 - drop shipped to anywhere in the lower 48.  Can be black textured caps or Chrome caps.  Same price.

 

Harnesses are $285 shipped by me to anywhere in the US.  $100 of this is refunded by me if you send me your factory harnesses.

 

DenaliDH Enthusiast

DenaliDH

Posted
Posted

Thanks Phil. The only reason I was going with the oem mirrors is because I am also purchasing the Intelllihaul 3 camera system and the mirror cameras replace the oem mirror bottom caps. 

 

How do I buy the mirrors and the harnesses through you?

 

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pgamboa Senior Enthusiast

pgamboa

Posted
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Posted
Thanks Phil. The only reason I was going with the oem mirrors is because I am also purchasing the Intelllihaul 3 camera system and the mirror cameras replace the oem mirror bottom caps. 
 
How do I buy the mirrors and the harnesses through you?
 

Send me a PM and will get you squared away.


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GOMD Enthusiast

GOMD

Posted
Posted

@pgamboa

 

I have a 2017 Silverado 1500 LT Double Cab All Star, with DL8 mirrors, and I would like to upgrade to DPN towing mirrors.  Am I correct that I would only need the new mirrors and each sides new harness, but not the RZY harness? I read your first post, and looked at the provided dropbox links, but the model years stop at 2016. Thanks in advance.

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pgamboa Senior Enthusiast

pgamboa

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1 hour ago, GOMD said:

@pgamboa

 

I have a 2017 Silverado 1500 LT Double Cab All Star, with DL8 mirrors, and I would like to upgrade to DPN towing mirrors.  Am I correct that I would only need the new mirrors and each sides new harness, but not the RZY harness? I read your first post, and looked at the provided dropbox links, but the model years stop at 2016. Thanks in advance.

You are correct.  RZY Harness is only needed for 2014 and some early 2015 who are missing the cargo light and running light circuits at the door jamb (cabin side).

 

I also have a Supplier that can get DPN Mirrors for $495 (Black Textured Caps) or $555 (Chrome Caps).

 

Thanks!

GOMD Enthusiast

GOMD

Posted
Posted
38 minutes ago, pgamboa said:

You are correct.  RZY Harness is only needed for 2014 and some early 2015 who are missing the cargo light and running light circuits at the door jamb (cabin side).

 

I also have a Supplier that can get DPN Mirrors for $495 (Black Textured Caps) or $555 (Chrome Caps).

 

Thanks!

Thanks for the quick response, I will let you know if I end up moving along with it.

mblanar33 New Member

mblanar33

Posted
Posted

Phil - need some help as I’m still a little unclear (it’s a lot of information when I thought this was a plug and play mod!)

 

i have a 2014 GMC all terrain edition which I think is similar to the SLT. I have power fold, heated and turn signal mirrors and want to upgrade to aftermarket towing mirrors since cost is better. 

 

I was weighing my options between power and manual. Would they both need extra harnesses or is it plug in play since I already have power folding? Just need help picking out the right options and harnesses I need to make it work. Most likely leaning towards manual folding since the price is Probly more economical. 

 

Thanks for the help! 

 

 

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pgamboa Senior Enthusiast

pgamboa

Posted
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16 minutes ago, mblanar33 said:

Phil - need some help as I’m still a little unclear (it’s a lot of information when I thought this was a plug and play mod!)

 

i have a 2014 GMC all terrain edition which I think is similar to the SLT. I have power fold, heated and turn signal mirrors and want to upgrade to aftermarket towing mirrors since cost is better. 

 

I was weighing my options between power and manual. Would they both need extra harnesses or is it plug in play since I already have power folding? Just need help picking out the right options and harnesses I need to make it work. Most likely leaning towards manual folding since the price is Probly more economical. 

 

Thanks for the help! 

 

 

Since you're a 2014, your upgrade path will be more.

 

First - you will need door harnesses to accommodate the tow mirror lighting features.  Tow mirrors have turn signal (which you already have), running light and cargo light.  The running light and cargo light you don't have now and why you need new door harnesses for that.

 

But...since you're 2014, your door jamb will NOT have the cargo light and running light circuits landed.  This is where the RZY jumper harnesses is needed.  The installation of the RZY is intensive as you have to land it to both door jambs, under the hood (in the fuse block), and into a junction box in the driver side footwell.

 

So while it is "Plug and Play" - meaning, no programming/flashing of modules are needed, getting circuits landed to slots will be needed. 

 

Hope this helps.

mblanar33 New Member

mblanar33

Posted
Posted
34 minutes ago, pgamboa said:

Since you're a 2014, your upgrade path will be more.

 

First - you will need door harnesses to accommodate the tow mirror lighting features.  Tow mirrors have turn signal (which you already have), running light and cargo light.  The running light and cargo light you don't have now and why you need new door harnesses for that.

 

But...since you're 2014, your door jamb will NOT have the cargo light and running light circuits landed.  This is where the RZY jumper harnesses is needed.  The installation of the RZY is intensive as you have to land it to both door jambs, under the hood (in the fuse block), and into a junction box in the driver side footwell.

 

So while it is "Plug and Play" - meaning, no programming/flashing of modules are needed, getting circuits landed to slots will be needed. 

 

Hope this helps.

Ok. I’m sure I can figure it out. You sell this harness as well? 

 

Is there a particular brand of aftermarket mirrors that work best? I noticed the a1 autos but I don’t like how they don’t have the turn signal integrated into the mirror glass. 

 

I found these that were more in my orice price range as well: https://www.protuninglab.com/20chsigmcsi1.html?utm_source=googlepepla&utm_medium=adwords&id=140891675818&gclid=Cj0KCQiAoo7gBRDuARIsANeJKUbPCcBmu-d0_1DizTtKLMe7jwmjjPzqtmS-UHAH3RWXTKs0MGdGC8gaAl0wEALw_wcB

 

any input here is appreciated! Thanks 

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