main beam inop on o/s and horn inop

[Steve111]

hi , my 2000 t4 has a fault with the o/s main beam not working and now the horn has stopped ,ive checked the fuses and bulb all are ok, any suggestions ?
thanks steve

[rayl]

check the wire'n and plug at back of h/light unit

[Steve111]

Thanks , I have tried the wire check and found no power at just the main beam , the earth is ok so is the dipped beam , also checked resistance and for a break all found to be ok , just no power

[rayl]

Hi, trace the power wire backwards from light unit till you come to a dist point, fault could be in there, wire will split some where for the n/s & o/s