I relocated the fuse block with the battery to the passenger bin, theres just 4 circuits to relocate and two of them are routed right back to inside the cabin.
I did things a more complicated way and ran the HEAD circuit straight to the headlight switch wiring at the steering column. Then I used the old HEAD wiring to run the EGI circuit and shorted EGI and HEAD wires together in the engine bay. The B2 circuit can be spliced right at the ignition switch. So I only had to run 1 additional small 12 gauge wire to the front of the engine bay for the RETRACTOR circuit.