The 7.3L glow plug system is very robust, compared to the 6.9L engine controller which is well known to fail and burn up glow plugs. Bypassing the glow plug controller on the 6.9 is common practice. However, occassionally there may be a need to do the same to the 7.3L style. So, how do you do it? Thanks to Adam Clark (Diezel_Cowboy), we now have the answer. Click Here for Adams article on "Glow Plug Controller Bypass Wiring".
