All failed at once, horn, Central locking, indicators, AC, tail lights, brake on

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All failed at once, horn, Central locking, indicators, AC, tail lights, brake on 2004 Mazda B3000 Lights, radio, right hand window, clock, hazard lights. Most are on the bottom row of fuses which are still all good, battery is fine terminals are clean, any clues? by Vintrudyute perth w australia