Thanks for your help, Dave. I have the black box with four pins. Someone had connected the dash indicator light to one of the signal contacts and it worked fine. I bought a three pin relay from AVR today and installed it and the signals and indicator light work fine. Never thought to try the four way flashers but they should work as well. My car is a "survivor" with 65,000 miles and I am the second owner. I bought it from an estate sale here in Chilliwack. It was driven by a lady school teacher. I had considered selling it but when I see it in my garage sitting there so pretty I change my mind.
Take care
Moe