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Changes to Step #4

Edit by Paul Barnfather

Edit approved by Paul Barnfather

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[title] Fit the 12V battery & regulator
[* black] Fit the regulator somewhere convenient (above or below the coil is a good option)
[* black] Fit the new 12V battery. The widely-available 4Ah YTX5L-BS fits in the existing tray just fine. Use a bit of foam to isolate the battery from the engine vibration and a rubber strap to hold it in place.
[* black] Connect a 10A inline fuse to the battery positive lead and connect the other side to the brown wire that previously went to the 6V battery negative terminal (for negative earth)
[* black] Connect the three yellow wires from the regulator to the three alternator wires. It doesn't matter which one goes to which.
[* black] Connect the black wire from the regulator to earth (for negative earth)
[* black] Connect the red wire from the regulator to the brown wire that previously went to the rectifier output (for negative earth)
[* black] Connect the red wire from the regulator to the brown wire that previously went to the rectifier output (for negative earth)
[* black] Connect the battery negative terminal to earth (for negative earth)