Two auxiliary power junction blocks are located within the driver's side rear cargo area jack stowage compartment. Each junction block is powered directly from the battery through a 50 amp circuit breaker for connection to customer-furnished equipment. The two circuit breakers are located in the breaker/relay panel forward of the instrument panel glove box. A maximum load of 50 amps (600 watts) can be connected to each junction block. The wiring diagram for this circuit is shown as part of the diagram for "Wiring Provisions - 12 Volt Battery Power".
The two junction blocks are connected to coiled 5 foot (1.5 m) branches of the rear body harness and fastened near the jack. Mounting of the junction blocks can be at customer-selected rear cargo area locations permitted by the branch harness length and using customer-furnished mounting hardware.
The junction blocks should not be attached to the interior trim plastic components without appropriate backing hardware to the mounting bolts.
To connect the customer-furnished equipment at the junction blocks, use the following steps:
- Disconnect the negative (-) battery cable.
- Connect the customer-furnished equipment positive leads to the junction block terminals and tighten to 11 lb ft (15 N·m).
- Reconnect the negative (-) battery cable to the battery. Torque the bolt to 3.6 lb-ft (5 N·m).
- Set the time on the clock and radio pushbuttons as needed. See "Audio Systems" in the Instrument Panel section of your Tahoe owner's manual for more information.
The ignition must be turned off and the vehicle vacated prior to connecting the negative (-) battery cable to the battery.
