If there are wiring diagrams to any switches, please post them or a link will also work.
Some Flexo braided sleeve and maybe some Adel clamps. I have both, but if you want a specific color like Red, then you might have to order some. There will be other places that need protection and cosmetic dress up like the engine bay. The closed braid can be a pain to add wires at a later date, so keep that in mind.
I bought mine here.....
WireCare.com | Your Local Cable Management Superstore!
Do you have a plan for dis-connecting the harness from the body? Will those connectors fit thru a 3/4 inch hole? You can wire direct, but it's not nearly as easy to reconnect all the wires. But then again you will not have over 12 circuits. Your call.
I have Deutsch DT and DTM connectors with 2 to 12 wires each. Here is some info to consider .....
Deutsch DT Connector Basics | Deutsch Connector Store
Deutsch Connectors – The Basics:
Deutsch DTM Series:
This size 20 connector will accommodate wire sizes from 22-16 gauge depending on which contact is used. DTM connectors come in 2, 3, 4, 6, 8, 12 pin configurations. The maximum current (amp) draw on each pin would be 7.5 amps continuously.
Deutsch DT Series:
This size 16 connector will accommodate wire sizes from 20-14 gauge depending on which contact is used.. DT connectors come in 2, 3, 4, 6, 8, 12 pin configurations. The maximum current (amp) draw on each pin would be 13 amps continuously.
Deutsch DTP Series:
This size 12 connectors will accommodate wire from 14-10 gauge depending on which contact is used. DTP connectors are only available in 2 and 4 pin configurations. The maximum current (amp) draw on each pin would be 25 amps continuously.
Will the fan switch control a relay that carries the high current. It's the preferred way.
No, it will come directly from the battery positive terminal.
Very good thinking and planning!