I can't find the answer for a situation that was mentioned here.

I just put LED turn signal bulbs (3457A) in the front that only flash with signal or hazard. They don't come on any other time.

What will fix this? Resistors? Different bulb brand?

 

Sounds like you're running regular 3457 LEDs. You need CK3457 LEDs

 

You bought non CK type bulbs. Normal non LED bulbs (halogen) don't have polarity restrictions so you can install them either way and they will work. Here is a picture of the difference.

Our 7th generations have CK style sockets for that bulb. You need to either buy CK style switchbacks (constant white and blink amber) or do what I did and bought all white non polarity LED bulbs here. Check you state laws though because some states don't allow white turn signals up front. Luckily IN does.
http://www.ebay.com/itm/281257954757...84.m1497.l2649

If they are hyper flashing you will need a resistors. Seriously look around the forum there are tons of answers and write ups.

 

you need CK style. non CK-style will blow fuses.

 

Get the vled switchbacks! I have them and they're pretty money!