have broken down , pulled up at shops with ever thing working ok ,when went to restart screen came on , hit modem button all ok, hit starter and screen when blank with starter not making a sound couple mins later after trying the key couple of times screen lit up , hit modem button all ok hit start and blank screen and blank since (couple of days after trailering it home) battery read 12.6 volts but put on trickle charge anyway for 6 hrs (thinking wouldnt start if battery but might lite up screen ) found from day of break down no horn/indicators etc but hazard lights work very bright .. all fuses seem to be ok , been told 2 circuits off ign switch , one mains and 1 for hazard lights .. any and all ideas would be appriciated