I am replacing my front turn signal bulbs to 7443 to 7440 and i have the 04 headlights.

Would it do anything bad to the car?

 

So you only want the bulb to turn on when blinking right?

 

Correct =)

 

ok, check this out. its easy to do and you dont have to hack up your wires.

https://g35driver.com/forums/lightin...r-mod-diy.html

 

You might have to grind off a rib from the bulb's socket for it to seat completely. Compare the old bulb's socket with the new one and you'll see what I mean. Use a fine grit grinding stone on a Dremel tool to do it.

The link above might be a better option than using a different bulb.

 

thanks =).