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Circuit/System Description

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

Voltage is applied at all times to the left cornering lamps relay which is part of the underhood electrical center. When the park lamp switch is placed in the ON position, ground is applied to the body control module (BCM) through the park lamp switch circuit. The BCM then applies a ground to the left and right cornering lamp control circuits. This engages the cornering lamp relays and applies voltage through the left and right cornering lamp fuses to the cornering lamps.

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