BMW Repair: 1984 BMW, bmw

Question
how can I fix my directional blinker switch?  

Answer
Steve,
Do you mean repair a problem with the switch or replace the switch? Also, what type is your car (325, 320, 318, 316)?
Please provide me with a fuller description of the problem with your turn signals (not just the switch) so that I could tailor-fit my response to the problem.
Tino