GX-A422SI - JBL Car Audio Service Manual (repair manual). Page 3

INTRODUCTION

THANK YOU for purchasing a JBL

®

 GX-A422SI amplifier. So we can better serve you should you require warranty service, please retain your original 

sales receipt and register your amplifier online at www.jbl.com.

INCLUDED ITEMS

LOCATION AND MOUNTING

Although these instructions explain how to install the GX-A422SI in a general sense, they do not show specific installation methods that may be 

required for your particular vehicle. If you do not have the necessary tools or experience, do not attempt the installation yourself. Instead, please ask 

your authorized JBL car audio dealer about professional installation.

IMPORTANT: Disconnect the vehicle’s negative (–) battery terminal before beginning the installation.
  • Always wear protective eyewear when using tools.
 • 

 

Check clearances on both sides of a planned mounting surface. Be sure that screws or wires will not puncture brake lines, fuel lines or wiring 

harnesses, and that wire routing will not interfere with the safe operation of the vehicle.

  • When making electrical connections, make sure they are secure and properly insulated.
  • If you must replace any of the amplifier's fuses, be sure to use the same type of fuse and current rating as that of the original.