Honda CB250n 1982 no electrics whatsoever....

[Houseparty]

hiya im new to this sorry... anyway...
I have a 1982 cb250n in good running order right up untill i got it Mot,d, it actually passed and i was quite suprised, all they had to do was fit some rear indicators.... anyway i picked it up and rode it home but broke down about a mile away, the bike just instantly died like some sort of electrical fault, i pushed it home and it just would not start, i removed the spark plugs and held them against the cylinder head and no spark at all when engine turned over..... i replaced the plugs and now i dont have electrics full stop, no ignition lights nothing?? the battery is fine and tested and i have had a go at fault finding and here is what ive found and got stuck with...
i have 12v from battery to connector block behind headlight that goes to the ignition switch, once i turn the ignition switch on the 12v goes to zeroand when off i have 12v back... so i disconnected all connector blocks behind headlight and then turned on ignition and my 12v stayed, i replaced the connector blocks one by one untill the 12v went to zero again and the fault seems to lay with the connector block supplying the indicators etc, i unplugged all indicators front and back and i still loose the 12v so it cant be them.... this is how far ive got to and i think if i look any more im may well explode lol... any help would be sooo appreciated as this is now driving me insane!!
thanks peeps ever so much...
houseparty
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