Main ground wire locations
 

Would anyone have pictures/ approx locations where the left and right primary battery ground cables attach? Both on the block from factory? Either to frame? Going through all ground wires and braided bond wiring cleaning to bare metal and treating with corrosion inhibitor/ preventative as preventative maint. No slow/ hard to start issues. new batteries and heavy duty batt terminal ends installed last Feb. 2002 F 350 Super Duty 7.3 Powerstroke 4X4. Vehicle build date 9/13/01.
Thanks