MSC15375 Chevy/GMC 2019-2022 1500 and 2019-2023 2500/3500 13-Pin Headlight Adapter Boss

Boss Headlight Harness #MSC15375.

This is a 13-pin harness adapter for trucks with LED or HID lights. It is used on the 2019-2022 Chevy/GMC 1500 and 2019-2023 Chevy/GMC 2500/3500.

In 2022, the 1500 series had a mid year refresh which requires a different harness for any new body style 2022+ 1500 models; that harness is MSC28210.

The 2024+ 2500/3500 series will also feature a new harness.

To make sure this is what you need for your truck, check Boss' Power Match.

The installation instructions are at this link.