I had several LED replacements for the 1157 bulb, I had replaced the license plate housing with a cats eye housing and put a LED in all worked fine.Then I thought wonder what will happen if I replaced the running- brake lamps also. I replaced one checked lights all was well, when i replaced the second one I got a traction control fault engine fault and went to limp mode. I know they are lower amperage. Put the two old 1157 back in and all was well.Talking about finicky!