I am really confused as to what type of bulb I need to use in my 2015 C-MAX. According to the manual, tail/brake is 3157K. I ordered my LED's before I took delivery of my car so I would have them here when I picked up my car. Unfortunately, when it came to replacing my tail lights, I found the inner ones were 1157. I had to reorder those. I installed the Philips Vision LED 3157 bulbs in the outer brake/tail lamp and they fit. There is no click when inserting them, and I had to bend some metal bits in the socket so it would grip on the bulb better or it would fall out. The result was a brake light that matched OEM brightness, but came on instantly.
Now here is my confusion. Online bulb guides say 7443 for the brake light. The Ford manual says 3157K. The bulb I pulled out (I only just looked at them now) are W21/5W... which seem to be 7443.
So... the big question, is that what I should be using? A 7443 bulb for the brake light?
edit: changed the title.
Edited by notquitesane, 19 May 2015 - 02:16 PM.