Orde of wiring?

I am currently wrking on an n64 portable and I was just wondering that is there any way to wire certain components before others to prevent problems as opposed to wiring on the baaterries screen and all that in any order I feel? If this question is hard to understand ill do my best to rephrase
 
The contents of the sticky is reference material, some of it may be a little out of date, but for a simple beginning portable it should have all the answers.
 
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