How to Replace a Horn in a Pontiac Grand Prix
The Grand Prix name has been in continuous production by Pontiac since 1962. There have been seven generations as of 2008 that include mid-size, full-size and luxury cars. Pontiac Grand Prix owners frequently replace the original equipment manufacturer's horn with a much louder aftermarket horn. Replacing a horn in a Grand Prix requires only a few tools and is a fairly straightforward procedure.
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Instructions
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1
Locate the original manufacturer's horns by looking under the hood. For Pontiac Grand Prix models built after 1996, the most likely location is under the passenger side headlight. Prior to 1997, both horns on a Grand Prix should be behind the front grill. Pontiac Grand Prix models have one low tone and one high tone horn so you will need to identify the one that you need if you are only replacing one horn.
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2
Remove the passenger headlight. Unscrew two nuts on each side of the headlight with a socket wrench and remove it to expose the horns. Loosen the mounting bolt for the old horns with a socket wrench and unplug the power connectors. Remove the two horns.
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3
Mount the new horns with the attachments that came in the kit. You should be able to simply mount the new horns in the old brackets if your kit is a direct factory replacement. Some custom horn kits include air compressors that may require you to install the horns in a non-standard location.
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4
Plug the old wiring harnesses into the new horns if they are compatible to retain the factory wiring. Some aftermarket horn kits may include a custom wiring harness that you will need to connect to your car's original wiring using a wire/crimper splitter.
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5
Test the new horns to ensure they work. Be aware that horns that use a compressor will be extremely loud.
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6
Re-install the passenger headlight, if necessary, by reversing Step 2.
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