
Engine Interface Guide 
- Glider kits 
Effective 04/08/2013 Peterbilt will be shipping Glider Kits built to the 2013 level electrical system.  
This document will provide information on the interface the cab is equipped to support. 
Vehicle Engine Connection 
The interface between the vehicle’s main cab harness (ref. part # P92-8904) and the engine 
harness is through the engine firewall connector located on the top edge of the driver side firewall. 
Connector Assembly Key 
Connector Information 
The mating connector for the firewall connection is a Deutsch: HDP-26-24-47-E-L017. The firewall 
connector pin-out is: 
Pin Position  Circuit Name  Circuit Type  Circuit Details 
1  ORN1229-4  Power  Ignition Switched Power 
2  Open     
3  BRN4331-0  Signal  OBD MIL Light (Check Engine) 2013 Only 
4  YEL7111-0  Signal  A/C Compressor Clutch 
5  ORN3971-0  Power  AECU Ignition (2010 Engines and On) 
6  BLK0782-0  Power  Engine Spare Power (E1) 
7  BLU4527-1  Signal  Outside Air Temp 
8  VIO4500-1  Power  NAMUX Power (+5V) 
9  Open     
10  GRA3911-0  Signal  Starter Solenoid Coil 
    PAGE 1 of 4 
Engine Firewall Connector 

Engine Interface Guide 
- Glider kits 
11  GRA3143-0  Signal  Remote Throttle Enable 
12  VIO3141-0  Signal  Throttle Supply #1 (+5V) 
13  VIO3142-0  Signal  Throttle Supply #2 
14  BLU3142-1  Signal  Throttle Sense Position #2 
15  Open     
16  GRA3631-1  Signal  Two Speed Axle 
17  GRA3186-0  Signal  Misc. Engine Input #1 
18  GRA3511-1  Signal  PTO On/Off 
19  Open     
20  Open     
21  ORN3111-1  Power  Engine ECM Switched Power 
22  BLU3141-0  Signal  Throttle Sense Position #1 
23  GRN3141-0  Signal  Throttle Return #1 
24  GRN4500-1  Signal  NAMUX Analog Return 
25  GRN4522-0  Signal  Main Trans Oil Temp Return 
26  BLU4522-2  Signal  Main Trans Oil Temp 
27  Open     
28  WHT0813-1  Ground Shield  J1939 BCAN – Shield (2013 Only) 
29  GRN0813-0  Signal  J1939 BCAN – Low (2013 Only) 
30  GRN0812-1  Signal  J1939 VCAN - Low 
31  YEL0812-1  Signal  J1939 VCAN - High 
32  GRA3124-0  Signal  MAG Switch 
33  GRA3913-0  Signal  Remote Start/Run 
34  GRN3155-26  Signal  Switch Common Return #3 
35  Open     
36  Open     
37  GRA3512-0  Signal  Remote PTO Set 
38  GRA3513-0  Signal  Remote PTO Resume 
39  BLU3144-0  Signal  Remote Throttle Signal 
40  BRN4323-0  Signal  Wait To Start Lamp 
41  GRN3142-0  Signal  Throttle Return #2 
42  BRN4311-0  Signal  Check Engine Telltale 
43  BRN4312-0  Signal  Stop Engine Telltale 
44  YEL0813-0  Signal  J1939 BCAN – High (2013 Only) 
45  GRA3182-1  Signal  Misc. Engine Output #2 
46  YEL5913-0  Power  Washer Pump 
47  GRA3199-0  Signal  Engine Multifunction Circuit #2 
Notes: 
The 2013 equipped cab no longer supports the J1587 interface (formally pins 2 and 3). The BCAN 
circuits (pins 28, 29 and 44) are not needed for non-2013 engines. The NAMUX Power (+5V) circuit 
has moved from pin 28 to pin 8. The misc. engine output #1 circuit has moved from pin 9 to 17. The 
misc. engine output #2 circuit has moved from pin 41 to 45. The service brake switch #1 circuit 
(formally pin 20) is now a multiplexed signal. 
    PAGE 2 of 4 

Engine Interface Guide 
- Glider kits 
Multiplexed Signals 
The following items are supported by multiplexing using the J1939 connection between the cab 
electrical controller (CECU) and the engine controller. Please make sure the engine parameters are 
set to receive multiplexed signals for the following: 
Engine Brake Controls 
Cruise Controls 
Engine Fan 
Service Brake Pedal Position #1 
The following signals for the instrumentation system come from the engine controller: 
Engine Speed 
Vehicle Speed 
Oil Pressure 
Coolant Temperature 
Oil Temperature 
Engine Hours 
Vehicle Software Parameters 
For proper functionality, please set the vehicle parameters as follows using ESA: 
Make sure to set engine make to the proper engine (for DDEC use CAT) 
Outside Air Temperature (OAT) is set to: SENSOR 
RPM sweet spot set to: OFF 
Water-in-Fuel sensor set to: OFF 
Brake lamps on with retarder set to: OFF 
DPF functionality set to: OFF 
DEF gauge is set to: OFF 
Clutch switch set to: OFF 
Engine shutdown protection timer set to: OFF 
Downhill speed limiter telltale set to: OFF 
Engine de-rate and shutdown warnings set to: OFF 
Green House Gas (GHG) set to: OFF 
PTO total fuel used diagnostic set to: OFF 
    PAGE 3 of 4 

Engine Interface Guide 
- Glider kits 
OAT Sensor 
The outside air temperature (OAT) sensor is set to connect to the engine for 2013 where the engine 
reports back to the instrumentation as a multiplexed signal. Since older engines will not be able to 
support this functionality, if the outside air temp feature is to be enabled, it must be hard wired to the 
Cab Electrical Control Unit (CECU). The sensor is located in the driver side mirror head and the 
circuit is available at the firewall engine connector in pin 7. 
The OAT signal has to connect from the outside air temperature sensor to the cab electronic control 
unit CECU (pin 16). Therefore, a means to connecting this circuit is to connect the OAT circuit from 
the sensor to pin 7 of the firewall connector mentioned above. That circuit would then have to be 
connected to pin 16 of the Main Cab harness CECU connector #3, located behind the dash (lower, 
center areal. See below for excerpt from main cab harness drawing indicating the connector pin 
location. 
CECU Connector #3 
    PAGE 4 of 4