Electric placement

[B4 Sloth]

I have a dilemma, have only one speedo and motor at the moment and dont want to be soldering all night. There are loads of moving parts inside the car...how u guys routing neatly? Have the worlds shell awaiting paint which has second hump for bit more room. Cable ties? More cable ties with a heat shrink chaser.
fyi losi excelorin/ mini futaba and till next month standard sized futaba servo..

Pics would be grand!!