LUV's have a weak link in the electrical system, the fusebox. The terminals the wires connect are riveted to the fuse holders. A little age and corrosion, and you get electrical intermittents. I solved mine by taking it apart and soldering the joints. Others have cleaned it with lemon juice, and others a new fuse box.
On the 6 wire plug from the VR white red = W = fuel pump and charge light, white = W = ignition, white blue = B = battery, black = E = earth, British for ground, white black = F = field, the stem of the Tee connector to the alternator, and white green = N = field ground, feeds back to the VR.
The fuel pump relay is to stop it if the engine stalls unattended. A bad float valve could let gas go everywhere.
The resistor relay is mean to give a hotter spark. You could run the hot to the relay coil to the + terminal of the coil.
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