Proprietary Bikes and the Right to Repair

I think it was in 2016 that my BIL told me that his big diesel JD would shut off when he attempted some necessary action, maybe raising the scoop. He was supposed to hire a company with a big truck and trailer to haul it to the dealer. He asked me to troubleshoot. I asked if he had a schematic. He said he had the shop manual on CD. He was away when I went over there. Based on what did and didn't work, the schematic pointed to a certain relay, but I didn't know how to open the panels to look for the board with the relay. He showed me when he returned. The coil was getting voltage but the contacts weren't closing. I assured him that the relay was the problem. The dealer had it in stock, and it was pretty cheap.

He's hated me ever since, for knowing what he didn't know about a tractor he'd bought.
 
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