Originally Posted by Ricky Bobby

Jay, you need to be sure to buy Canbus Error free bulbs with the built in resistors on those mirror puddle lights (a pair is probably $4 on Ebay, prices have come down a ton over the years). All the exterior bulbs are monitored by the Canbus, unlike the interior bulbs which can all be swapped to conventional LED's.

Alternatively, you can put a conventional LED in the mirrors but you will need to wire in a resistor on one side to trick the circuit.