Magnum wiring help

When you lay out the complete harness on the Magnum engine, remove the wrapping and plastic covering. Use good masking tape to mark individual wires at each component you are keeping, such as a throttle position sensor. Then, since covering is removed, physically trace that wire back to the PCM connector (some go into splices with other wires before going to PCM), and then mark that end with masking tape. Use the wiring diagrams in the manual to identify power and ground wires, and outputs such as fuel pump relay controls at PCM connector, and mark them with tape as well. Don't cut anything until you connect these circuits and verify it still starts and runs. If using a newer OBD2 PCM without connecting transmission control wiring, you will have trouble codes setting, but the engine controls still work fine.