MSD LS Coil Harness, Power Upgrade

We’ve learned that some of the OEM wiring that powers the coils may not be up to snuff when it comes to increasing performance and coil output. This direct plug-in harness allows you to provide a reliable path for the increased voltage and current that your coils need. (Recommended for use with MSD Pro Power Coils and can even be used with OE coils.). Corrects check engine light.