I made my own wiring harness for diesel Series 2A.
Bought some 30/40amp SPDT relays with harness, 12 blade fuse panel with wires, H4 headlight relay kit, a bunch of different color wires and sizes, 1/4 inch spade connectors with 3M heat shrink (male & Female), Earth (ground) terminal block, wire inline fuse holders and wiring butt connectors. now put them all together and now everything is fused and working brightly!