HELP W/ WIRING MULTIPLE DEVICES!!!

[3.8L V-8 eater]

Looking for some advice on the best way to install multiple devices at once. Going to wire up an LC-1 wideband set up, power logger, and alkycontrol kit.
I have the update chip for the scanmaster to display A/F ratios. My wideband set up also has a stand alone gage. Is there any benifit to using both or just ditch the w/b gage and only use the s.master???
When i tap into the green wire to read the 3 bar map what's the best way to do it considering I need it for the alky kit as well as logging boost on the p.logger???
Should I wire in 1 device at a time and verify it works before moving to the next one or will I have to back track and create more work doing it this way??? One last thing. I think I want to wire in the
low level LED and Turnon LED in the instrument panel...

 

[aminga]

With the PL update in place the Scanmaster can display WB AFR. I see no need for a gauge.

 

[NicksTurbo6]

This is a big help with wiring. Keeps things neat, organized and safe: http://www.gnsperformance.com/products/fuse_box.html

 

[3.8L V-8 eater]

That's not a bad idea!! My fuse panel is not far from looking like the one in that link...

 

[TurboDave]

I have one of those, and here's how I mounted it.

 

[KevinB]

Here's how I made my own box. I have about $15 in the fuse block and the terminals from autozone. The power is coming from one of the ign ports on the fuse box. You could mount it anywhere.
One block is all the positives from the fuse block, the other block is all the negatives. That block is grounded to the body and also have a 10 gauge going to the battery. It is nice to have the grounds like this instead of all bunched up under one bolt under the dash. Makes problem solving easy as well as adding new components.