528e 1985 main relay is where?

Hi.
I have no spark; we tested and changed near everything. I don't have a manual for this car...could someone please tell me where the main relay is. We've looked but not sure and we think this maybe the problem...at least I hope otherwise it's off to the shop tonight.

Thanks. I am anxiously awaiting your answer...cheers

I found the main relay...any thing else that could create no spark?

BAD ECU? Fuses?