How to service and repair the instrument panel dimmer switch on Mercury Grand Marquis?

Starting service and maintenance on the instrument panel dimmer switch requires disconnecting the battery ground cable. Start by disconnecting both electrical connectors to the headlamp switch and continuing with its disconnection from the housing. You should release the retaining tabs to take out the instrument panel dimmer switch. The new switch installation requires following the reverse steps of removal.

OEM Mercury Grand Marquis Dimmer Switch

Light Dimmer Switch

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Mercury Grand Marquis Dimmer Switch
Part Number: 3W1Z-11691-AA
Product Specifications
- Other Name: Resistor Assembly; Headlight Dimmer Switch; Instrument Light Rheostat
- Manufacturer Note: Thumbwheel design
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003-2011 Mercury Grand Marquis | GS, GSL, Limited Edition, LS, LSE, Ultimate Edition | 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS

Mercury Grand Marquis Dimmer Switch

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Mercury Grand Marquis Dimmer Switch Parts Questions & Experts Answers

Dimmer Switch
3W1Z-11691-AA
Q: How to service and repair the instrument panel dimmer switch on Mercury Grand Marquis?
A: Starting service and maintenance on the instrument panel dimmer switch requires disconnecting the battery ground cable. Start by disconnecting both electrical connectors to the headlamp switch and continuing with its disconnection from the housing. You should release the retaining tabs to take out the instrument panel dimmer switch. The new switch installation requires following the reverse steps of removal.