loose wire big problems

My 308 GTB has been running crap of late. After running through loads of leads, plugs carb, issues, and weeks of my life thinking about it and scanning f chat for answers , I found it (I think) last night. One of the main feed connectors going into the fuseboard (76 car) was slightly loose. Push it in , fixed! Car now runs great. Why it came loose in the first place no idea but maybe it heats up and works off when cool ? Anyway one worth checking for you all next time you get ignition issues.

 

Outstanding. Especially gratifying to find an intermittent problem.

Can you describe in some detail where this was? Wire color, connector onto fuseholder, location, etc? Has fuseholder itself been upgraded yet?

 

There are two main feeds into the relay board . The wires are linked via a white plastic cover . The large red feed had worked loose. The more load you give on the electrics ie AC or main beam, the worse the problem became. Original fuse and relay board.