the interior light need relay 1 and 2 so switching them doesn't do anything

 

You reckon I need to replace both relays ?

 

you might only have one one bad relay, test them would be the best thing to do

 

Hello. New to the forum and f150. Had 1991 ranger 4.0 before. Ok so it seems I'm having the same problem . Checked smaller fuses in cab ,checked bulbs and nothing. I want to try and check 1/2 relays but I do not know how much amperage it's supposed to have. On what dial is the reader suppose to be. Sorry I never used one. The third break light doesn't work either. Windshield wipers also out and I've read somewhere I can find article about the relay that controls this also has some play in the tranny shifting hard. Please shed some light with what you know. I'd greatly appreciate the help. Thank you