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09-08-45-003E Installation of Electrical Aftermarket Accessories on 2-Mode Hybrid Full Size Trucks - (Jun 21 2012) - part 4

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The pin out of the connector is as follows:

Cavity

Circuit Description

Circuit Number

Fuse Size

1

Ground

1050

NA

2

Battery Feed (Do Not Use)

4540

15 Amps

3

Not Used

4

Not Used

5

Battery Feed

2340

30 Amps

6

Not Used

7

Run/Crank Feed

739

10 Amps

8

RAP Feed (Do Not Use)

43

300 milliamps

Wire Gauge Selection

For any of these powered connections to be used, circuit protection guidelines mustbe followed to assure that the circuit gauge is selected appropriately so that itwill be protected by the fuse in case of a short circuit.

Relay Installation

#09-08-45-003E: Installation of Electrical Aftermarket Accessories on 2-Mode Hybrid Full Size Trucks - (Jun 21, 2012)

accessory relay pin (739) run/crank (added) accessory relay to accessory pin (1 050)

Install relay (P/N-12193601) with 5–way pigtail connector (P/N-15306045) as shownin the above diagram to ensure the load from the accessory is connected to the 30-ampBattery feed, and not the 10 amp Run/Crank circuit. Connect the 30-amp Battery Feed(circuit 2340) from pin 5 of the MBEC to pin 30 of the relay. Connect pin 87 of therelay to the accessory. Connect the 10 amp Run/Crank (circuit 739) from pin7 of the MBEC to pin 86 of the relay coil. Connect pin 85 of the relay coil to Ground(circuit 1050) on pin 1 of the MBEC.

Caution:To prevent damage to any sensitive electronic components, use the relay listed whichincludes a suppression resistor circuit. The integral suppression resistor will preventa voltage spike from being transmitted onto the Run/Crank circuit. Damage to the vehicleby failing to install this relay as part of this aftermarket installation is not coveredunder warranty.

Parts Information

Part Number

Description

Qty

20791502

Connector

1

12193601

Relay

1

15306045

5–Way Connector w/Leads

1

19151475

Relay Bracket

1

Available Power Distribution System (2011-2013 Tahoe/Yukon Hybrids with Hybrid MunicipalPackage RPO WRJ or WRK)

The Hybrid Municipal Package consists of a power distribution system integrated intothe vehicle 12 volt electrical system at the front compartment (RPO WRJ) or frontcompartment and rear cargo area (RPO WRK). All aftermarket electrical equipment andaccessories must be wired to the fused circuits provided in the upfitter 12 volt powerdistribution panels. The power and ground can be connected at these locations withouthaving to spliceor cut into the existing vehicle wiring. The total amount of power available to thepanel(s) is 45 amps (540 watts). The power distribution system simplifies upfittingand avoids connection to critical components of the Hybrid vehicle electrical system.

#09-08-45-003E: Installation of Electrical Aftermarket Accessories on 2-Mode Hybrid Full Size Trucks - (Jun 21, 2012)

#09-08-45-003E: Installation of Electrical Aftermarket Accessories on 2-Mode Hybrid Full Size Trucks - (Jun 21, 2012)

The system consists of a 12 volt battery feed coming directly from the battery toan underhood fuse block. The underhood fuse block is protected by a fusable link inthe feed wire coming from the battery. The underhood fuse block feeds the single frontcompartment fuse block (RPO WRJ) or both the front compartment and rear cargo areafuse block (RPO WRK) with direct 12 battery and ignition.

#09-08-45-003E: Installation of Electrical Aftermarket Accessories on 2-Mode Hybrid Full Size Trucks - (Jun 21, 2012)

#09-08-45-003E: Installation of Electrical Aftermarket Accessories on 2-Mode Hybrid Full Size Trucks - (Jun 21, 2012)

Both the front compartment and rear cargo fuse blocks are protected by maxi fusesin the underhood fuse block. There are two 50 amp maxi fuses, (1) to protect eachfuse block battery circuit and two 30 amp maxi fuses, (2) to protect each relay andfuse block ignition circuit.

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