I'm busy now to read all replies, but sometimes relays like the 5 pins bosch are not installed to handle loads but just to switch the source from one place to another place when triggered, keeping the source active ( i.e. headlight doors on electric concelead headlight systems, where both posiions need to be energized. These are 4 prongs but just because ground is chassis ). Of course, the relay helps on the load issue at the same time