The bulbs/sockets aren`t exchangeable 1 big hole 1 small hole I tried that
3157`s in the front 194`s in the corners
The only problem with this switch is the corners make poor turn signals they`re not bright enough already had 2 people start to go at stopsigns because they couldn`t tell I was turning I even put in 4 bulb LED 194`s
I just ordered a second set of 3157`s and sockets from the dealer they are $11 each and am going to install them in the corners they`ll make better turn signals
You can see good enough to drive at night they`re almost as bright as yellow fogs
yet the headlights cancel them out nicely so they`re not obnoxious enough to get me pulled over