Got it.
If you have the four pin turn signal relay it is most likely a Bosch unit. Those units are now quite difficult to source and ridiculously expensive, think $100 or more, to find. I know this because mine failed quite a few years ago.
Bill Taylor, known to most of us as SO bill, and I worked together back then to figure out a modern replacement for that four pin relay.
Study the pages at Panteraplace for your options.
Go to technical, then electrical diagrams and you will see your options as shown in the attached screen capture.
Larry
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