Ah, a separate light. Then you're correct. I thought you were trying to do it like a 960 using the existing unused coolant fluid level warning light in the 940 clusters. Maybe it was Spook who was into that trick, but I thought it was you. You'd just need a little square twist bulb to do it OEM as I described.

So, yes, here's perhaps a better way to do it your way with the relay up under the dash protected and a separate light there, but only needing to run a single wire up to the fluid level sensor and then to the chassis ground rail by the right headlight (if memory serves correctly):

85(-) .. Energizer coil (ground) ->to the float switch and then to chassis ground (front fender)
86(+) . Energizer coil (+12V) <-from a nearby KP-II fused power source (cigarette lighter)
87 ..... Load (normally open) -unconnected
87a ... Load (normally closed) ->to the warning light and then to chassis ground
30 ..... Load common <- 12V from a a KP-II fused power source, so simply bridged to pin 86(+) (as per Art's original comment)

(87a and 30 can be switched if it makes the bridging easier)

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Dave -still with 940's, prev 740/240/140/120 You'd think I'd have learned by now