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2013 CTS-V
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66 Posts
Discussion Starter · #1 ·
Lights should not be this big of a problem.

Fog light.

h3 or h10?

drl/turn signal

3157 or 4157na? Both of these bulbs defer to the same LED, but I'm curious.

Planning on a fog HID conversion and a drl/turn signal LED exchange.
 

· Registered
2006 STS-V, 2004 Pontiac GTO, 2009 Pontiac G8 GT, 1999 Chevrolet Suburban LT 4x4
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1,451 Posts
Fog light is 9145. Not an H3 or H10.

The turn signal is most likely a 3157. Yea they're a pain to get to, but you can work your way up from the bottom if you don't mind scuffed hands. Otherwise, removing the front bumper skin is needed to get to the light housing and unbolt it.
 
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