Forward Splice Pack

GROUNDS
Before checking the ground circuit from the horn all the way to the ground stud, check the circuit from the splice pack to ground by testing some of the other subsystems grounded by the same splice pack. If the other subsystems function properly, it is most likely that the path from the splice pack to ground is good (or at least one of the paths is good with redundantly ground splice packs).

FORWARD LAMP SPLICE PACK
If one of the following systems is operating normally, the ground circuit is most likely good.
^ Left side marker lamps
^ Right side marker lamps
^ Washer pump
^ Horns