Installation of Jake Brake on 88 8V92 DD

[KP Marsh]

--- To the forum: We have an 89 WB 40 coach that was built with an 88 DD 8V92 engine. This model has the firstmodel of DDEC I which featured a 2 part ECM and required a DDR Reader by Ragen called a "T" bone tester. This coach is also equipped with a transmission retarder that we would like to up-grade to a Jake Brake. Does anyone of the forum know whether this modification can be done on this model of DDEC or couldit be wired as a strictly electro-mechanical set-up with a switch on the dash?I would appreciate any information. We have not purchased the Jake set-up yet, just doing my research. By the way if thereis any owner of these old DDEC units that need to borrow our tester feel free to contact me. Ken and Patti Marsh 89 WB Towanda and our 6 cats Full-timing currently at Carson National Fish Hatchery, Carson, WA