You've got a lot more on your plate than you originally thought. Your car has a module that monitors the current to each bulb and diplays a warning in the dash when one is out. Pulling too much current through that module can fry it. So that means it isn't gonna like any extra bulbs at all. If the current draw for the mirror bulbs is on the low side you may get lucky, but it is an expensive module to be putting your bet on being lucky.