Installation Instructions

1 1 90558 Installation Manual For #60250 2003-2005 Cummins Common Rail Diesel 1st Edition March 2008 Copyright 2008 by Perfect Performance Products, LLC 2 Painless Performance Products, LLC 2501 Ludelle St. Fort Worth, TX 76105-1036 PHONE: 800-423-9696 FAX: 817-244-4024 EMAIL: If you have any questions concerning the Installation of this harness, feel free to call Painless Performance Products' Tech Line at 1-800-423-9696. The Tech Line can be reached from 8 to 5 central time, Monday through Thursday, and 8 to 4:30 on Fridays. We have attempted to provide you with as accurate of Instructions as possible and are always concerned about corrections or improvements that can be made.

2 If you have found any issues or omissions, or simply have comments or suggestions concerning these Instructions , please write us at the above address, send us a fax at (817) 244-4024, or email us at We sincerely appreciate your business. Painless Performance Products, LLC shall in no event be liable in contract or tort (including negligence) for special, indirect, incidental, or consequential damages, such as but not limited to, loss of property damage, or any other damages, costs or expenses which might be claimed as the result of the use or failure of the goods sold hereby, except only the cost of repair or replacement.

3 3 TABLE OF CONTENTS 3 TOOLS NEEDED .. 3 PRE- Installation AND HARNESS ROUTING 4 ADDITIONAL COMPONENTS ENGINE SENSOR PARTS 5 GROUNDING THE 5 YEAR SPECIFIC ROUGH ..6-9 ENGINE SPECIFIC FUSE 20 20 20 FIRE OPEN ENDED 21-25 FINAL 26 27 28 LIST OF PICTURES ENGINE COMPONENTS DRIVER SIDE .. 6 ENGINE COMPONENTS PASSENGER SIDE .. 7 HARNESS ROUTING ON 8-9 ..10 FUEL .. 10 WATER IN FUEL 10 OIL PRESSURE .. 11 FUEL CONTROL .. 12 CAM POSITION 13 CRANK POSITION 13 RADIATOR FAN INJECTOR 1& INJECTOR 3& ..15 INECTOR 5& ..15 MAP/IAT SENSOR ..15 FUEL PRESSURE EARLY COOLANT TEMPERATURE ALTERNATOR.

4 18 PRE-TURBO BATTERY TEMPERATURE FUSEBLOCK/ RELAYS/ LATE PARK/NEUTRAL CRUISE INTAKE AIR HEATER 4 INTRODUCTION We at Painless Performance Products believe you have purchased the most up-to-date and easiest to install Cummins common rail engine swap harness on the market. All components of this harness are new. All harnesses are tested for faults before they leave the factory floor. This harness is designed for easy Installation , even if you have no electrical experience. Please read entire manual before Installation . Download a color version of this manual from The 60250 harness is a complete wiring system for the turbo diesel injection systems on 2003-2005 Cummins engines.

5 Only the factory ECM is to be used with this harness. This harness includes all wiring that is needed by the computer to run and control the turbo diesel injection system. It is recommended that you have the computer reprogrammed to remove anything in the original factory programming that relates to a device or devices that are not being used in your particular vehicle . NOTE 1: Most remanufactured computers come without any programming and must be programmed before they can be used. Call our tech line and we can refer you to someone with this capability. NOTE 2: Factory 2006-2007 Cummins ECMs have an anti-theft feature programmed into them. They are also pinned out incorrectly for this harness.

6 Do not use a 2006 or 2007 ECM with this harness. NOTE 3: The program in your computer must match the transmission that you plan on using. For instance, you cannot run a 48RE transmission with a computer programmed for a G56 standard transmission. If you are not using a transmission that originally came behind the Cummins engine, it is suggested that you flash the ECM for a standard shift transmission and purchase an aftermarket controller for the transmission. NOTE 4: 2003-2004 Cummins engines with 47RE automatic transmissions have the throttle position sensor mounted on a bell crank located towards the front of the intake manifold. 2004 Cummins engines with standard transmissions and 2005 both automatic and standard have an APPS mounted to the accelerator pedal.

7 This harness supports the 2003-2004 bell crank or 2004-2005 accelerator pedal mounted APPS. Your ECM will need to be flashed accordingly. Do not try to use a 2005 or later accelerator pedal mounted APPS with an ECM flashed for 2003 to 2004. You must purchase the correct pedal to match the ECM programming. The ECM pin outs change from 2003-2005 which makes the APPS sensors non-interchangeable. See page 17 and 21 for more information. NOTE 5: Up until the factory lift pump was mounted to the back of the water/fuel separator and heater. This harness does not include this connector. If you wish to use this lift pump keep the connector from your old factory harness and splice it to this one.

8 Otherwise, use the supplied fuel pump relay output wire to power a factory fuel tank mounted lift pump or any aftermarket fuel pump. The fuel pump relay is rated for continuous 30 amps. TOOLS NEEDED You will need the following tools in order to install this wire harness: Crimping tool NOTE: USE A QUALITY TOOL TO AVOID OVER-CRIMPING. Wire stripper Volt/Ohm Meter Electric drill with 1 1/4 hole saw Screw drivers SAE and Metric sockets w/ratchet/extensions and wrenches OBD II code reader Allen wrenches 5 PRE- Installation AND HARNESS ROUTING GUIDELINES If you plan to loom this harness, do so before you install it onto the engine/ vehicle . Looming your harness is definitely recommended.

9 Painless Performance Powerbraid is a great way to protect your harness from the elements and it makes the harness look great and the Installation look professional. Look online at for more information. The ECM is pre-mounted to the driver side of the engine block. If you move the ECM anywhere from the factory position, the 60250 harnesses will not properly fit. The fuse block is weather proof by design and should be mounted in the engine compartment. Most of the wiring in the harness has been pre-terminated to the proper connector and all wire has been factory color-coded. The Installation with of your harness kit will consist of two parts: The physical routing, positioning, and securing of the harness, wire groups, and individual wires and connectors.

10 Many of the factory harness clips can be reused to install this aftermarket harness. When you remove the factory harness make sure to keep the factory clips and retainer bolts. The proper electrical connection of the individual circuits. Most circuits are pre-terminated with a factory style connector. Please look carefully at the connector and its intended component you are connecting to. Each connector is specifically keyed and can only be pushed onto its mate one way. Forcing the connector on the wrong way will damage it and its terminals. Trouble shooting damaged connectors is not as fun as driving your re-powered Cummins vehicle . So please take care when making connections, double check you are following these Instructions .