XJ proportioning valve??

[MiNi Beast]

stock MJ brake swith set up vs the bolt in WJ set up with a ford brake switch

 

[Mark Serva]

Am hoping to hold onto the rear brake valve in my MJ. They still use them in everything from Sprinter vans to Toyotas so I think it's still sound to have good brakes, especially under a load. And, I believe, Dodge still stocks the part via late model big Rams like the 3500 Diesels. Hence, I suspect there are more around than we think. However, I haven't been able to track down a part number as the old AMC numbers tend to be a dead end. Happy motoring.