Posted 4/27/2008 16:06 (#366685 - in reply to #366680) Subject: Re: John Deere 8520 Radar speed to GPS speed
West Texas
You are right if you're working with 30 series tractors.
Someone correct me if I'm wrong but on 20 series you need a special wiring harness to go from bubble to wherever it plugs in to radar connector. (right front corner under cab behind exhaust pipe?) Then set display to read GPS speed.
John Deere 8520 Radar speed to GPS speed
