With the twilight sentinel system on, the intermittentcircuit could cause headlight and instrument panel lights to go out. Suddenloss of headlights could reduce driver visibility and might result in a vehiclecrash without prior warning.

Exterior Lighting — Headlights — Switch

Summary
The twilight sentinel potentiometer (thumbwheel control) might have been manufactured with electrical contacts which could result in an intermittent headlight circuit.
Actions
Install a new part in one of the vehicles control computers to prevent this condition from occuring.
Documents (1)

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Date Announced
APR 06, 1987
Vehicles Affected
56,783
NHTSA Campaign #
87V047000
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