Need wire diagram for a 2012 GL450 headlight cleaner.

[SFC BLK]

I took my 2012 GL450 to a body repair shop here in TX two years ago and did not check the headlight cleaner system because it was not damaged at the time I drop the vehicle. To my surprise I found out the shop removed the complete system without my concern. I was able to find all parts but the wire plug or wire harness. It looks like they deleted the complete system. I am trying to reconnect the headlight cleaner pump but need to know exactly where it connects. This system was working perfectly before I took it to the shop and because I found out two years later the shop can't tell me who or what happened. Please if someone can help me to find out how to run the wires to the right relay or connecting point I will appreciated it!