HARNESS AS 3734754 - Caterpillar

Improper jump start cable connections can cause an explosion resulting in personal injury.Prevent sparks near the batteries. Sparks could cause vapors to explode. Do not allow jump start cable ends to contact each other or the engine.
An external electrical source may be required to start the engine if the installation is not equipped with a backup battery system.For information on troubleshooting the charging system, refer to Special Instruction, REHS0354, "Charging System Troubleshooting". Many batteries which are considered unusable are still rechargeable. After jump starting, the alternator may not be able to fully recharge batteries that are severely discharged. The batteries must be charged to the proper voltage with a battery charger. For information on testing and charging, refer to the Special Instruction, SEHS7633, "Battery Test Procedure".
Using a battery source with the same voltage as the electric starting motor. Use ONLY equal voltage for jump starting. The use of higher voltage will damage the electrical system.Do not reverse the battery cables. The alternator can be damaged. Attach ground cable last and remove first.When using an external electrical source to start the engine, turn the generator set control switch to the "OFF" position. Turn all electrical accessories OFF before attaching the jump start cables.Ensure that the main power switch is in the OFF position before attaching the jump start cables to the engine being started.
Turn the start switch on the stalled engine to the OFF position. Turn off all the engine accessories.
Connect one positive end of the jump-start cable to the positive cable terminal of the discharged battery. Connect the other positive end of the jump-start cable to the negative terminal of the engine starting motor.
Connect one negative end of the jump-start cable to the negative cable terminal of the electrical source. Connect the other negative end of the jump-start cable to the negative terminal of the starting motor. This procedure helps to prevent potential sparks from igniting the combustible gases that are produced by some batteries. Note: The electric control module must be powered before starting the engine, or damage can occur.
Start the engine.
Immediately after the engine is started, disconnect the jump-start cables in reverse order. After jump starting, the alternator may not be able to fully recharge the batteries that are severely discharged. The batteries must be replaced or charged to the proper voltage with a battery charger after the engine is stopped. Many batteries which are considered unusable are still rechargeable. Refer to Operation and Maintenance Manual, "Battery - Replace" and Testing and Adjusting Manual, "Battery Charger - Check".Refer to the Electrical Schematic for your engine. Consult your Cat dealer for more information.