When I put indicator on and start breaking break light flashes ,also wipers have stopped working and speedo as we'll is this all related
I wouldnt have thought the speedo would be related, as they run on the cable to the hub.. But I might be wrong. Have you checked all the earths are clean?
^^^ What they said. For wipers check fuse and connection to the switch. Speedo must be cable come off one end or other presumably? Hope you sort it ready for MOT
forget speedo [not a mot fail ] concentrate on the lights..Find the earth on back light cluster put another wire and touch the body [not painted bit]if the light works drill a screw in.... Because the tester usually tests the lights first he will be happy to start your fail list...
Do the lights on the back then check all the fuses in the fuse box for the windscreen wipers. Did they work recently?