When i bought my 03 T4R last week the A/C light was flashing when i turned it on. I brought it to the shop and they said it was the A/C clutch relay (common problem). They didnt have a new one on hand so they switched it out with the A/F heater relay and told me to order the new realay and swap them back. My question is what is the A/F heater relay and how important is it? I live overseas and it may take a little while to get the new relay in and i dont want to run the risk of damaging anything by not having the A/F heater relay installed in the proper place.