
SEALIGHT H10/9145/9140 LED Fog Light Bulbs, 6000K Xenon W...
$17.09
Buy on Amazon →
Used for: Fog Light Bulb Front
Used for: Headlight Bulb High Beam
Used for: Headlight Bulb Low Beam(with halogen headlights)
Used for: Headlight Bulb Low Beam(with HID headlights)
Used for: Back Up Reverse Light Bulb, Daytime Running Light Bulb
Used for: Brake Light Bulb, Tail Light Bulb
Used for: Center High Mount Stop Light Bulb, Dome Light Bulb, Map Light Bulb
Used for: License Plate Light Bulb, Parking Light Bulb, Side Marker Light Bulb Rear, Turn Signal Light Bulb Front Outer
Used for: Side Marker Light Bulb Front
Used for: Turn Signal Light Bulb Front Inner, Turn Signal Light Bulb Rear
Used for: Courtesy Light Bulb
Used for: Trunk or Cargo Area Light
This page helps you verify bulb sizes for the 2005 Cadillac CTS-V by lighting position, so you can match the correct bulb before you buy. Because the CTS-V could be equipped with different lighting setups, checking the exact location is the safest way to avoid ordering the wrong part.
Use the bulb chart below to identify common exterior and interior bulbs on this model, including headlights, tail lamps, turn signals, license plate lights, and cabin lights. It is a quick reference for replacement planning, whether you are doing a simple swap or comparing stock bulbs with LED upgrades.
Fitment can vary by trim, package, market, and body style, so always confirm the bulb type on the vehicle before purchase. This is especially important on the 2005 Cadillac CTS-V because some positions may use halogen or HID lighting, and aftermarket conversions can change the required bulb or connector style. If your car has been modified with LED replacements, projector retrofits, or nonfactory housings, the listed bulb size may not match what is currently installed. For the best results, remove the old bulb and compare it to the chart, then check the socket, base shape, and any markings on the bulb itself before ordering replacements.
The 2005 Cadillac CTS-V may use D1S for HID low beam headlights or 9006XS for halogen low beam headlights, depending on the lighting setup.
The high beam bulb is 9005XS.
The front fog light bulb is listed as 9145 LED.
The daytime running light bulb is 3157.
The back up reverse light bulb is 3157.
The rear turn signal light bulb is 3157A.
The front outer turn signal light bulb is 2825.
The front inner turn signal light bulb is 3157A.
Both the brake light and tail light use 3157R.
The license plate light bulb is 2825.
The front side marker light bulb is 194NA.
The rear side marker light bulb is 2825.
The trunk or cargo area light uses 211-2.
The center high mount stop light bulb is PC175.
Both the dome light and map light use PC175.
The courtesy light bulb is 564.
Yes, many positions can be upgraded to LED, but you should match the correct base and size first. Some LED replacements may need polarity checks, resistors, or CAN-bus compatible parts to avoid warnings or hyperflash.
It helps you verify the bulb size by lighting position, which is useful when trim level, market, or previous repairs have changed the original setup.