diy 24volt 9 pin Deutsch connector for esaydiag 3 see image image2
voltage regulator module protect the scanner
2. Suppressor
3. 9 pin and female OBD2 connector NB please cut this connector in two
4. project box
5. PG9
if all this is confusing please wait for the full tutorial
here is a YouTube video with a sample that i make from part i have laying around plan to make one with more ready available part from eBay
update 12/20/2018
After more check was make i find out that the j1708 idle at near battery volt so direct connection to the scanner and 24 unit is not safe so please ignore the j1708 connection in the above diagram