Main wiring harness

So.... back to the build and time to look at the harness. Whilst the chassis is still accessible and before the rear back panel goes in I thought it would be wise to get the routing for the main wiring harness resolved and in situ.

This part of the build, well in fact anything electric for that matter is filling me with dread a likely irrational thought since opening the packaging reveals a harness fully labelled, with proper plug and play capability and what seems on the face of it at this stage anyway minimal wiring and soldering required. 

Full credit to GBS and I can fully see from looking at this why they are proud of the whole electric configuration on the zero. Each element be it instrument panel, engine bay, speed sensor, battery terminals are additional sub assemblies which merely plug into the main harness - Ideal for someone like me who fears the dark art of automotive electrics!

First thing to do was to temporary fix the firewall into position and then fix the fuse box onto the firewall so I can get a datum for where the wires run - first snag / head-scratch which way does the fuse box go and why four holes in the firewall when only two holes in the fuse box to fix in place?

Problem solved with a quick enquiry onto the owners club forum - wires come out of the top of the fuse box and two holes in the fire wall are not needed (why they are drilled in the first place...well that's for another day perhaps!). That problem resolved, fuse box fixed into position, time to route the harness through the chassis.

I elected to hang the harness off the brake lines/fuel line run thus keeping all services down the one side of the transmission tunnel - it gets very tight through the transmission area out into the rear and run around the boot bottom framework.

Moving towards the front of the car again hanging off the brake lines,along the passenger side, down the left hand side of the engine bay across the front left and right to the radiator, onto the headlamps area.

Being happy with the general running of the wires I fixed into place with cables ties ensuring spacing of ties complied with IVA rules (I have kept the front temporarily tied into place until I am comfortable with final positioning, I suspect how I have it now will change as attention is turned to the front of the car down the line).

The main harness is earthed to the chassis at the rear, so find a suitable place to rivnut a connection which will allow the earthing terminal to fix into place.

All loose wires were tidied up to prevent damage. 

Alas photos don't really do any justice to the routing / final fix as black on black does not come out well