RAM 2500 Truck 2WD V8-5.7L VIN D (2004)
Hose/Line HVAC: Service and Repair
Diode Replacement
1. Disconnect and isolate the battery negative cable. If the vehicle has dual batteries, remove the negative cable from both batteries.
2. Locate the diode in the harness, and remove the protective covering.
Diode Identification
3. Remove the diode from the harness. Note the direction of current flow.
4. Remove the insulation from the wires in the harness. Only remove enough insulation to solder in the new diode.
5. Install the new diode in the harness, making sure current flow is correct. If necessary refer to the appropriate wiring diagram for current flow.
6. Solder the connections together using rosin core type solder only. Do not use acid core solder.
7. Tape the diode to the harness using electrical tape. Make sure the diode is completely sealed from the elements.
8. Reconnect the battery negative cable(s) and test the affected systems.
