Outer Limits 4x4 Board

Hi guys

i can't seem to find the info on the site but i know it must be here somewhere as i have seen it before.

I have a friend i am helping out convert his Factory rear Vacuum locker over to air and i wanted to know if anyone has the wiring diagrams as well as the parts needed such as which solinoids to get, what air pressure you have to run though the vac lines to get it all working, if you can help that would be great

keep the factory one and put air locker in the front

check the bible, the thread is in there. most people use a mag double solanoid, keep vacuum but a better solonoid get them working well and without the factory solonoid issues