I'm still trying to determine what the small relay next to the coil does (30 85 86 87 87b). It sits behind the silver headlamp relay and small black junction box. A red wire feeds directly into it from the junction box so you'd think you could find it on the Haynes wiring diagram by following the wire. The Haynes diagram is a good one unfortunately the key only goes to 120. The numbers on the diagram go well beyond that.
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Simon 1980 240 320k 19 years. 'White Lightning' 1986 240 (recently adopted)