hello, i have a grey market 1989 525i. i need to replace my turn signal switch. i have found one at the local salvage yard, but it has BC on the switch where you can push it inwards to activate "something" . my car does not have BC on the switch and cannot be pushed in. my car is wired for many options that it does not have,but i may still try this used switch if it is for an option that i deem worth it.