This compact Digital Shift Light programs its single RPM activation point through an easy-to-view LED panel and two buttons, no separate RPM modules required. Six bright red LEDs illuminate to signal the shift point, and it installs on everything from 1-cylinder points-triggered engines to 12-cylinder coil-on-plug systems. It ships with a GMR Pickup (PN 8918) for easy hookup on diesels, points, or coil-on-plug applications.Specifications: Brand: MSD Category: Body Product Type: Shift Lights Sub Category: Instrument Panel Warning: California Proposition 65 Warranty: Manufacturer's Limited 1 Year Warranty Part Number: 89631 Programmable from 100-15,900 RPM in 10 RPM increments.FAQHow does the MSD 89631 differ from the MSD 8963?The 89631 is a single RPM-point on/off shift light, while the 8963 offers the same LED display with similar programmable functionality.What's included with the 89631?A GMR Pickup (PN 8918) for easy installation on diesels, points, coil-on-plug, or nearly any other application.What's the programmable RPM range of the 89631?100 to 15,900 RPM, adjustable in 10 RPM increments.{"@context":"https://schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"How does the MSD 89631 differ from the MSD 8963?","acceptedAnswer":{"@type":"Answer","text":"The 89631 is a single RPM-point on/off shift light, while the 8963 offers the same LED display with similar programmable functionality."}},{"@type":"Question","name":"What's included with the 89631?","acceptedAnswer":{"@type":"Answer","text":"A GMR Pickup (PN 8918) for easy installation on diesels, points, coil-on-plug, or nearly any other application."}},{"@type":"Question","name":"What's the programmable RPM range of the 89631?","acceptedAnswer":{"@type":"Answer","text":"100 to 15,900 RPM, adjustable in 10 RPM increments."}}]}
