wiring

Hi

I'm working my way around the 750 and am going to start trying to clean the wiring up a bit and try understand whats going on (and make it more reliable in the wet). The loom is mostly original but has been chopped about under the tank (a birds nest) so the plan is to piece in new wires back to stock colours, try and straighten out the mess and renew the connectors while I'm at it. So a few novice questions . .
16.5amp (2mm O/D) thin wall cable seems to be good for most use but seems very thin for crimping terminals on to - would 25amp (2.7mm O/D) cause any issues electrically ?
The big bullet connector blocks are a common electrical connection for all wires in and out ? These are a bit chunky - is there a better alternative ?
I've a lot of earths going to the original headsteady (which is heavily rusted as a result) I'm going to renew with a taylor headsteady once I fight my way through the birdsnest - where do folks run earth to on these ?
Any finally . . any good online reads recommended for this stuff ? (UK terminology)

thanks again
Stu

stu said:

16.5amp (2mm O/D) thin wall cable seems to be good for most use but seems very thin for crimping terminals on to - would 25amp (2.7mm O/D) cause any issues electrically ?

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Whatever crimp connectors you finally decide on, they need to be the correct size for the cable.
Except perhaps for the main battery feed and return, personally, I think 16.5A thin wall is more than adequate although I don't see there's much to be gained by using thin wall cable on a machine with so few circuits.

stu said:

I''ve a lot of earths going to the original headsteady (which is heavily rusted as a result) I'm going to renew with a taylor headsteady once I fight my way through the birdsnest - where do folks run earth to on these ?

Click to expand...

The suspensory spring bracket fasteners (or the empty holes if you buy the Taylor without the suspensory spring assembly) can be used as an earthing point

if you have a birds nest,.... send it ti the birds its at least 40 yrs old, the cover will be cracked and absorbing moisture, and for about $100.00 you can locate a new replacement . lots of running issues are the result of a wiring harness that is beyond servicable age.