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MSD Dual DIS-4 Harness
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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, MSD offers 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, 121-89121, 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, wiring will only take about an hour!
Easily install two DIS-4 Ignitions on late model Ford Engines
Easy connections with no splicing or cutting into factory wiring
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