1987-93 Mustang 5.0L Replacement Engine Harness Installation Instructions
Last Updated 11/24/2020 by Dustin Leathers
Age, and heat from your Mustang's engine can take a toll on the factory engine harness! The OEM style plugs on our replacement harness allows for a quick, and easy installation!
https://lmr.com/products/install-mustang-replacement-engine-harness
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Installation Instructions:
- Disconnect the battery
- Installation will be easier if the upper plenum is removed.
- Remove the factory harness, taking note on how the wires are run.
Disconnect the main black, and white connectors at the back of the engine.
- Install replacement harness following factory routing. Make sure ground lug has clean metal, and will make good contact to intake bolt.
- Complete installation by confirming harness is routed away from exhaust, and any moving parts.
Installation instructions provided by Ron Francis Wiring.
1979-93 Mustang Engine Parts & Underhood Accessories