Metra 70-2057 Amp Bypass Harness for 2014 and Up GM

Metra 70-2057 Amp Bypass Harness for 2014 and Up GMDo you work on a lot of GM vehicles? Especially around the sound system? This Metra 70-2057 Amp Bypass Harness for 2014 and up GMs is a must-have. As...