PAC GM3 Chapter 2 - Installation:

Chapter 2 - Installation:

This chapter will explain how to install the iPAC-GM3 interface using the

GM3H and the GM3HXM harnesses. Some installations require you to

make wiring connections. To eliminate the risk of an electrical short, we

recommend removing the negative terminal from the vehicles battery prior

to installation.If you do not feel comfortable making these connections, we

suggest you seek professional installation.

1. Carefully remove the radio from the dash of the vehicle.

2. Plug the 14 & 16-pin male ends of the GM3H harness into the 14 &

16-pin ports on the back of the radio. Next connect the factory 14 &

16-pin male connectors into the 14 & 16-pin female connectors on the

GM3H harness.

3. Optional Connections:

RED: Retains Accessory Power (RAP). Provides 12V(+) accessory power

after the vehicle is turned off up to 10 minutes, or until the drivers door

is open.

RED/WHITE: Non-functional wire; no connection is necessary.

Note: Insulate all wires that are on the IPAC-GM3 harness that are not

used for installation

4. Connect the 8-pin connector on the iPod docking cable to the IPAC-

GM3 interface. (DO NOT CONNECT IPOD AT THIS TIME, WAIT UNTIL

INITIALIZATION IS COMPLETE, SEE SECTION 2.2 FOR DETAILS)

5. Plug the male 24-pin connector of the GM3H harness into the

iPAC-GM3 interface.

Male Plug 14 Pin Female Plug

FACTORY 14 PIN HARNESS

GM3H

Harness

14 Pin Male Plug

RCA CABLE

iPod PLUG

& CABLE

iPAC-GM3

OPTIONAL

AUDIO

SOURCE

FACTORY RADIO

iPod

Red Wire From T-harness Optional

ACC +12V OUTPUT works with RAP

( Retained Accessory Power)

FACTORY 16 PIN HARNESS

16 Pin Female Plug

16 Pin Male Plug

Male Plug