Hello, I wanted to share my A10 - Inside RearView Mirror conversion from UE8 (OnStar Only) to OnStar and Auto Dimming (UE8 & DD8). I have read a few threads out there from those that have attempted this by tapping into nearby power circuits. I didn't want to go this route and wanted this to be a Factory as possible. Also, since I completed the Side Mirrors Conversion (DL8 to DL3), I also wanted have the Auto Dimming feature working on the Driver's Side Mirror as well. After completing the conversion, I can confirm that I now have FULL functionality with Auto Dim on the Rear View Mirror AND my Driver's Side Mirror
This setup is for my:
2016 Silverado, Crew Cab, LT, 5.3L Gas.
Your mileage might vary. Please confirm wiring for you vehicle!
NOTE: Having the Driver's Side Auto Dim function to work, you MUST have the circuits in the Driver's Door Panel harness. Since I converted by harness from DL8 to DL3, I had the circuits already there. I created a PDF of all my notes and research to ensure I was doing this right and like it would have come from the factory. Please see "A10 Mirror Connector Reference". I hope this helps those that also want to this. I used pre-terminated terminal leads that I bought from eBay. Those part #s are also in the Reference Diagram. There are a total of (4) Circuits Needed that were missing in the A10 - (UE8) Mirror Connector. To get the DD8 Option you'll need the following circuits (please note, these are also listed in detail in the "A10 Mirror Connector Reference). I advise to print it out to have for easy reference and understanding. Circuit 24 - Backup Lamp Control (Light Green/Red Stripe) Circuit 1690 - Automatic Day/Night Mirror Signal (Yellow/White Stripe) Circuit 1691 - Automatic Day/Night Mirror Low Reference (Black/Yellow Stripe) Circuit 1739 - Run/Crank Ignition 1 Voltage (Violet/Light Green Stripe)
UPDATE: When i did this upgrade back in September 2016, the instructions in the cross reference sheet I provided include sourcing the Pre-Terminated Leads from GM. Since then, I have found the actual terminal pins so that you can crimp then yourself. They are cheaper in price but will require a crimp tool.
Pre-Terminated Leads:
A10 Mirror: 13575867 - These sell for about $6 each. You'll need (4) = $24
X51L/X61A Panels - 19301767 - These sell for about $14 each. You'll need (4) = $56
Total Cost = $80 for Pre-Terminated Leads + Shipping
Terminal Pins from Mouser:
A10 Mirror: SAIT-A03T-M064 - $0.07/each - You'll need (4) = $0.28
http://www.mouser.com/ProductDetail/Delphi-Connection-Systems/13849930-L/?qs=sGAEpiMZZMs7eK6h2EBtKnVYD9xPrV6CnMqjFL3PycU%3D
X51L/X61A Panels: 13849929-L - $0.18/each - You'll need (4) = $0.72
http://www.mouser.com/ProductDetail/JST/SAIT-A03T-M064/?qs=%2Fha2pyFaduhkh82d7cDA4KZPGw2IAWOBN4IAbsI5FZ%2FIEBdeeFjRSg%3D%3D
Engineering Inc. PA-20 Crimp Tool - $35 on Amazon
https://www.amazon.com/dp/B002AVVO7U/ref=sr_ph_1?ie=UTF8&qid=1487961421&sr=sr-1&keywords=pa-20
Total Cost - $36.00 for the Terminal Pins and a Crimp Tool + Shipping
So, you will still save $40 getting the pins, crimp tool, and crimping them yourself. Since the pins are very cheap, I would pickup a few extras for crimping practice.
Step 1: I took a High Quality - 25' HDMI Cable and stripped wires away from it. I wanted to get the wires to be as close as to the GM color code scheme as possible. These wires were 22AWG. Step 2: I grabbed the four wires closest to the color code scheme and wrapped them with automotive harness tape. Step 3: I removed the Overhead Console and began running wires along the headliner (inserting from the front edge gap and working my way to the A-Pillar of the driver's side. At this point, I removed the fuse panel cover on the driver's side door to expose the X51L Fuse Block Instrument Panel. The purple wire will land on Pin #13 of the X3 Connector (this is on the right side of the Fuse Panel). Step 4: I separated my harness so that my purple wire (Circuit 1739) landed inside the X51L Fuse Block Instrument Panel with the other 3 wires (Black, Green, Yellow) continuing down the side into the footwell area. Step 5: Since I have the Kicker VSS System, I had to remove the amp as it sits on top of the X61A Junction Block. Remove the top cover to expose the connectors. The connector you'll want to remove and look at is the X3 Blue Connector (top left corner). This is where the 3 circuits will land. Pins #8, #9, and #13 is what you want. It was a real PAIN to insert since there was not enough slack in the harness, so be prepared for awkward contortion. NOTE: I did completely pull the fuse block out and verify pins on both sides of the fuse block. That is also noted in the reference diagram. Inserted leads, wrapped excess wires with automotive harness tape, zip tied to existing harnesses, connecting everything back. Step 6: In the overhead console side, I landed the terminal leads into Pins #1, #2, #8, and #9 (Also referenced in the diagram). Put everything back together, took a test drive at night... ALL IS WORKING! Hope this helps, let me know if you need any help with this. Here is the PDF I created for the complete wiring diagram and photos. A10 Mirror Connector Reference Here! ENJOY! https://www.dropbox.com/s/e8hnnt7nvdsv1wa/A10%20Mirror%20Connector%20Reference.pdf?dl=0