2019-2022 New Body GMC Sierra Radar Detector Harness and 23 HD models

This harness is for installing your radar detector into your 2019-2022 new body GMC Sierra 1500 or 20-23 HD models. This harness saves you from splicing and/or entering pins into your trucks wiring harness. 

We have a harness that will work on all 2019-2022 1500 models as well as 20-23 HD models.  Please select your appropriate mirror option when ordering as the harnesses are different.  For those of you with the manual dim mirror, the harness will connect at the fuse block instead of at the mirror itself.

This harness is for all radar detectors that use a phone cord style connector(RJ11).

For 22 refresh models please click here

Harness also available with a separate power and ground wire for those that may want to add in a dash cam or such.  Please note that these loose leads are an ignition based 12 volt feed and ground.  Most dash cams and such require 5 volts and you will need to make sure and use a voltage converter if needed.  This is not included with this harness.

 Please type in your vin# below and we will confirm that you have selected the correct harness

Product Overview: 

Manual Dimming Overview

Install Guide:

Installation Instructions 2019 manual dim