Does anyone know the system works? Is there a schematic somewhere?

What is the click coming from?

I've noticed a difference in when I try to start the ML:

- Turn key and hear click, nothing else.
- Turn key and hear click and then a noticeable pause before cranking begins. (~ 1 second)
- Turn key and cranking begins instantly.

Maybe this is a starter or starter connection issue?

__________________
Michael LaFleur

'05 E320 CDI - 86,000 miles
'86 300SDL - 360,000 miles
'85 300SD - 150,000 miles (sold)
'89 190D - 120,000 miles (sold)
'85 300SD - 317,000 miles (sold)
'98 ML320 - 270,000 miles (sold)
'75 300D - 170,000 miles (sold)
'83 Harley Davidson FLTC (Broken again) :-(
'61 Plymouth Valiant - 60k mikes
2004 Papillon (Oliver)
2005 Tzitzu (Griffon)
2009 Welsh Corgi (Buba)