Thought this might be helpful information. Many folks may already know this but for those who don't it might come in handy when trying to figure out just where the nearest factory grounding location might be. Now, these are specific to 1992-96 models but given Ford's penchant for leaving things the way they were for as long as possible, it is quite possible/probable that older models may well have similar factory grounding locations.

There are ten (10) grounding locations listed for the full-size F-series/Bronco for 1992-1996. They are as follows:

Ground A - Starter upper mounting bolt (gasoline engines)/ Right front of engine (diesel engines)

Ground B - Right front of engine bay near battery.

Ground C - Lower left front of engine.

Ground D - Right front of engine bay on the upper radiator support.

Ground E - Left front of engine bay on the upper radiator support.

Ground F - Behind bottom of left cowl panel. (This one is inside the cabin below the dash).

Ground G - Rear of the left front fender apron. (conveniently near the PCM and a ton of other electronics).

Ground H - Behind bottom of the right cowl panel. (This would be the OTHER one inside the cabin below the dash).

Ground I - Left rear corner of the cargo area near the tail lamp assembly.

Ground J - Center rear of the vehicle on the rear crossmember.

These are not the only places you can get a solid ground connection but they ARE the locations where there is most likely a bolt or some anchor point to attached a ring crimp or other wires to splice a replacement or additional ground wire in. For what its worth.

GS92

 

If I may and an additional location that is diesel specific. Since there are two batteries there ia a ground on both side bottom front of engine. This is some great info since as our trucks get older wiring becomes a bigger issue lol.