70-2054 General Motors Amplifier Bypass Harness Instalation Instructions

RPO codes tell what options & accessories a vehicle has. RPO codes can be found in the glove box, on the trunk lid or hatch, or on the drivers side door jam near the latch. If you find the RPO code & it does not match one listed above for your particular vehicle, you should not use this harness.

Many factory amplifiers are now incorporating the crossovers for the tweeters and subwoofers within the amplifier. When bypassing the factory amplifier, you need to cross over those speakers with either passive crossovers or use an after-market AMP with built in crossovers.

AMPLIFIER LOCATIONS
BUICK
- RAINIER 2004 W/ RPO CODE UQA……................................................ BEHIND RIGHT REAR PANEL CADILLAC
- CTS 2003-04 W/ RPO CODE U57…….....................BEHIND DRIVERS SIDE REAR PANEL IN TRUNK
- DEVILLE 2000-04 W/ RPO CODE U57…………................................………….BEHIND REAR SEAT
- ESCALADE 2000 W/ LUXURY SYSTEM……….......................................…UNDER CENTER CONSOLE
- ESCALADE 2002 W/ RPO CODE Y91………….....................…BEHIND DRIVERS SIDE REAR PANEL
- ESCALADE EXT 2002 W/ RPO CODE Y91….......................................……UNDER CENTER CONSOLE
- SEVILLE 1998-04 W/ RPO CODE UX9…………................................……….…BEHIND REAR SEAT
- SRX 2004 W/ RPO CODE U57……….............……………BEHIND PASSENGER SIDE REAR PANEL
- XLR 2004 W/ BOSE SYSTEM .………....................…ON PASSENGER SIDE FLOOR UNDER CARPET

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