Mercury Ignition Control Unit Harness

Using MSD’s DIS-4 ignition systems on your coil-on-plug Ford has always been a great upgrade, but honestly, the wiring poses quite a challenge. To ease this install, we now offer a wiring harness kit that’ll make the install nearly a direct plug-in. The harness provides a splice-free installation with connectors that plug directly into the factory unit. They even have corresponding wire colors. When used in conjunction with two DIS-4 ignitions and four dual ignition Adapters, PN 89121, your coil-on-plug Ford will receive all the spark it needs plus a two-step rev limit and step retard. And the best part is wiring will only take about an hour.

Product Features:

• Easily install two DIS-4 Ignitions on late model Ford Engines
• Easy Connections w/No Splicing Or Cutting Into Factory Wiring
• Wiring the system will take only an hour
• Multiple direct plug in connectors
• Wiring the system will only take and hour

This ignition harness is designed to match the fit and function of the original harness on specified applications, and is engineered for reliable performance and durability.

Product Features:

• Direct replacement – this ignition harness is designed to match the fit and function of the original harness on specified applications
• Ideal solution – this harness is a reliable replacement for an original harness that is missing, failed or damaged due to corrosion
• Durable construction – this part is made from quality materials to ensure reliable performance and a long service life
• Trustworthy quality – designed in the United States and backed by more than a century of automotive aftermarket excellence