The wiring harnesses went in fairly easily. First was the basic harness from AK and then the engine management system harness.
I am using a Canems ECU for which the support from Dave has been excellent for my teething self made issue.
All cable lengths have been perfect or too long which is better than too short. A good pack of grommets is required especially for the large hole in the drivers footwell which also needs to cope with approx 5mm wall thickness.
approx 4 metre of 40 (squared) flexible battery cable was also laid.
I thought it would be cool to have the main fuse block in the engine bay so you dont have to fight under the dash.
The ECU harness must come through the dash so a nice grommet from TriggerHandbrakes was fitted.
Wiring behind dash is before I tidied it up, as I just needed to check there was a home for every wire.