× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: Wont Rev Up
Posted to HD/Fleet Forum on 1/1/2014

Hello Michael!

I can't get a wiring diagram to look at for this beastie, so I'm flying blind here, but a couple ideas pop out:

You have disconnected the overdrive and PTO switches - Do they supply a ground when turned on? If so the harness may be rubbed th... Login to read more.