Honda-SOHC

Difficult to be sure from the photo, but the battery positive cable may have slipped down and both ends are in the electrics area.
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No...

I've been cleaning up my electrics as in pic 1 , cleaned up the regulator and put all back, replaced fuse box assembly no problem....I'm having trouble with the new starter solenoid though. The new one in pic 2 from DSS goes in at a different angle and that threw my memory out as to what goes where. The cable I've arrowed has a loose other end too just now, I can't think where it goes ( Battery positive?? ) .

Your insurance should be very cheap anyway, under £70 fully comp on a CB400/4 depending on post code, age blablabla.

WWWWAAAAHHHHH!  Mine is £1050 TPFT! I'm 61, clean licence not made a claim 30 years! Alas, I live in Shadwell east London, part of what the insurance world do or did call the 'Bermuda triangle' ....because so much goes missing.

I havn't got those gaskets in mine, they got so chewed up putting them in I gave up. Does it matter very much?

Another black out early this morning thankfully just down the road from home. I've pulled open the fuse box and the first thing I do is order a new one from DSS. I find 5 Amp fuses where there is supposed to be 7 Amp fuses, and 20 Amp fuse where there is supposed to be a 15 Amp fuse, that's the fuse that blew and left a burn hole in the Fuse box assembly. But had there been a 15 Amp fuse surely it would have plane blown quicker? A fuse blows to stop worse happening does it not, so something somewhere is wrong? Bottom fuse holder is a bit loose.

Looking at the state of the regulator box and connectors I would check and clean the connectors and earthing points.

I just googled Regulator box for cb400f and got images of the finned regulator/rectifier I just replaced. Yet it's called a regulator in the manual..trying to find one on the web. DDS don't seem to have one.

 I recently had a new harness (loom) fitted and new battery too. I soon needed a new rectifier and that was done. Then a black out on the street that turned out to be a couple of blown fuses, something the AA man overlooked    , my local bike shop sorted that out. A new condenser has been ordered as I saw a one on ebay. So I'm working on my electrics but not fast enough it seems. This morning all was dark when I turned the key. I noticed my headlamp switch was in the on position from when I last rode a couple of nights ago, I didn't see that doing any harm but took my battery in for a check in case, all was well with that.
I take off the side panel over the fuse box area and gave this tiny black square thing (arrowed in picture) a good press with the finger and all lit up fine. voom voom off I go.  Next time I try to start the bike down town all was dark again. Pushing and pressing the same thing didn't help this time, so I go to check the fuses, I took out the lower most one, it looked fine, put it back in and all lit up again. When I get home I experiment a bit and find that taking out that little black square didn't make the bike go dark ...so what happened his morning. What could be causing this. Is changing the fuse assembly a good idea or should the next move be something else?