Originally Posted by
34nineteen
Is the starter relay being energized when you push the starter button? (85+86) If so, what what happens when you jump across the secondary terminals? (30 + 87) or (30 + 87a). I don’t know if your relays have the standard Bosch markings on them.
Your probably best served by going to an auto parts store and picking up a new relay so you have a “known good one”. From the teachings of lunatic fringe the wise, XB’s are hard on ground connections and relays, among other things.