GM 2014-up w/ MOST Amp Bypass Harness
- Amplifier bypass harness for select GM vehicles with a MOST (r) amplifier
- Plugs in at the factory 21-pin plug amplifier and ran to the aftermarket radio or amplifier
- Allows for the installation of an aftermarket radio using the existing factory wiring and connectors
- No cutting of factory wiring needed
- 1-year warranty
Wire Colors for Bypass Harness - Black 8 Pin
- Black – ground
- Yellow – 12+ volt constant
- White – front left dash and door + (midrange and woofer)
- White/Black – front left dash and door – (midrange and woofer)
- Brown – not used
- Brown/Black – not used
- Gray – right front dash and door + (tweeter and midrange)
- Gray/Black – right front dash and door – (tweeter and midrange)
Wire Colors for Bypass Harness - Green 16 Pin
- Pink – center front (+) *
- Pink/Black – center front (–) *
- Blue – front right tweeter (+)
- Blue/Black – front right tweeter (–)
- Red/Black – front left tweeter (–)
- Red/White – front left tweeter (+)
- Purple – Right rear (+)
*Only for models with RPO code UQS.
E.I.A Colour Code:
- Yellow – 12V Constant
- Red – 12V Accessory
- Black - Ground
- Orange – Dash Light Dimmer/Illumination
- Green – Left Rear Speaker (+)
- Green with Black Stripe Left Rear Speaker (-)
- White – Left Front Speaker (+)
- White with Black Stripe – Left Front Speaker (-)
- Purple – Right Rear Speaker (+)
- Purple with Black Stripe – Right Rear Speaker (-)
- Gray – Right Front Speaker (+)
- Gray with Black Stripe – Right Front Speaker (-)