towing socket

Hi all

I was poking around under my Auto sleeper Nuevo (2009) and have found another towing type socket I have two on the tow bar setup one white and one black ,
I was wondering if anyone could help,
 the third is mounted out of sight up under the rear next to the step never heard it mentioned before  I don't know what its for.
Any feedback would be welcome.

thanks
micro

Some alarms use such sockets to connect external cables to wrap around bikes, etc.

Peter is correct (No surprise there then!  )

Eddie Jones of VanBitz always puts them there.

Daft place in my opinion, specially when many motorhomers are very creaky and well past their sell by date. I asked him to mount ours on the towbar bracket where I can easily reach it to plug in the bike cable.

Hope this helps.

thanks 
it is the strikeback    alarm    


super fouroum 
Mike Rowe (micro)

You may also have a switch to isolate it when not being used and when bike cable removed.