Location of solid state relay

For the diagnostic light, where do I mount the solid state relay? Also, the diagnostic light, it looks like it is supposed to be screwed on to something? Where?

The relay is meant to go on a DIN rail, so you may want to put it with the power distribution blocks. The light can go anywhere you choose, so long as you adhere to <R16>.

thanks. how do we mount the diagnostic light? it has ridges that looks like it is supposed to be screwed on to something, but what?

There should be a nut on the threads already. Check the tips and good pratices for the size of the hole, or just measure it.