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My dash lights are all out except 3 lock/battery/air bags what is the cause

If are you referring the the engine light and mil, brake light and abs lights this requires a new dash cluster this is a common problem with late 90s and early 2000s year fords . The only fix is a new instrumentation cluster . Try to get one from an aftermarket source as new ones from ford are not much better than the old one. This is one of the only things I tell customer to never buy from the dealer. I’ve replaced many in ford focuses and rangers . You can pick one up from Rockauto.com . Hope this helps