I have a 1993 Bronco XLT 4x4,with a 5.0...What would cause the interior lights,mirrors,radio,and speedometer to quit working..Also,what would cause the tranny to shift hard ("buck"),when I am driving? This all began approximately the same time...Please help...Thanks to anyone,who can help me troubleshoot this..

 

What have you tested so far? Battery, alternator, grounds, fuses? Is the check engine light on? Have you pulled codes?

If you can give some more info it will help narrow it down.

 

My husband has tried replacing fuses,etc.and after this was done,was when he began having this trouble...

 

Welcome to FTE and the Big Bronco Forum.

There are multiple fuse blocks in your '94. The under-hood fuse block handles the larger loads while the under-dash block runs the more frequently "tripped" circuits. You would do well to invest in a service manual with wiring diagrams (Haynes or Chiltons although in my experience Haynes does a better job with diagrams). This way you can reference which fuses are in question by tracing the diagrams to discover which electrical components are driven by which fuses.

Hard shifting can be caused by a myriad of factors however, I recommend dealing with the electrical issues FIRST as the cause for the shift problems could well be related and trying to troubleshoot with blown fuses or damaged circuitry will make the process futile.

 

^ Let me translate that: Check that all the fuses and relays work, and that the wiring and electrical system is working fine (good battery, working alternator, no shorts, no broken/cut/corroded wires, clean battery posts, and clean/tight grounds). If the elec. system checks out, start looking at the transmission if the problem isn't solved by then.