Thanks so much this schematic has been of great help when i have slowly been trying to wire this engine. With the bad weather now here I have been getting some shop time to work through all this. I have my battery box and controll console made and am working my way through wiring. One thing missing on the schematic is jake brake wiring. It only shows the ecm wire 508 and how it actuates the jake brake relay. I see the ddec 2 system used a ecm for jake brake control of high med and low. I also saw somewhere that they also used a relay set up and I could not find a schematic for that anywhere. I gave it a good think and after being up most the night I drew out a schematic I think would work. It took me a while to figure out how to get a one two three selecton with three jake solenoids and only two wires. I finally got a scrap of info on how the 3 solenoid setup was wired with 2 wires and I figured out the test from there! I have run through these circuits over and over and I think I have it! Can any of you guys look at my diagram and give me thier thoughts ? Sorry for the crudity of the drawing as art never was my strong point!
I really would like to see a factory diagram. I dont know how diodes would factor into it. The way i have mine set up you shouldnt need diodes. I had a relay pack with 3 relays out of a frieghtliner that i salvaged. I sat down and built this circuit today. Have it all ready to go just need to power it up and test it out. I figured id use light bulbs simulating the jake coils to prove it all out.
