ok so i was out taking care of some Christmas shopping and everything seemed to be working just fine, i noticed my volt gauge was reading a little low so i stopped in and had my battery and alternator tested, my battery is rated at 750cca and it tested at 758cca and my alternator tested at 14.25v with and without loads on so they are working properly. about 2 hours later i lost my heater blower motor, my radio, my windshield wipers, my blinkers, and my 6" k.c. lights all at the same time, those are the only things not working, i still have my hazards (even though my blinkers dont work) headlights high and low beam, tail lights, reverse lights, even my dome light, engine still fires right up i have no blown fuses, and all the wiring looks ok, does any one have any ideas on what i can do to fix this issue? i am at a loss, please help

 

I would start with the negative ground system. Do a quick search for "renix negative ground" & get all the info you need. The ground system on the '87-'90 (called Renix era) Jeeps have a poorly desinged ground system which is inexpensive & easy to correct. Should be done anyway-even if this does not correct your problem. There's lots of help/advice here. I'm basically regurgitating advice I've recieved here. Hope this helps.

 

Check all connections, some maybe dirty like mine. disconnected cleand and wokred!