How to install DM tach ready and shift light on 99-04.

Install time: approx 1 ½ to 2 1/2 hours

Items:

Dallas Mustang tach-ready ?? $49 ?? can’t remember (dallasmustang.com)
Summit Racing adjustable RPM shift light $35 (part# SUM-G2945)
splice connectors or electrical tape
9/32 and 10mm sockets