1998 Mk5 Autosleeper

[Danrad]

20180221_Mystery connection.jpg

Hi, I have recently bought a 1998 Mk5 Autosleeper motorhome ( 2.5 TD) and I have a couple of questions related to attached pictures. One shows a graph stuck to the passenger door step. What is it for? Please note the vehicle has additional air suspension units fitted on the back axle with a pressure gauge and air connection point in the drivers door step. The second question is what is the electrical connection near the rear of the gearbox (MT75 box). You can just see the flange of the prop shaft in the picture. It is not the reversing light switch. All responses welcome. Thank You

[Frag]

Electrical connection on gearbox,is the vehicle speed sensor,sender for speedo..
The graph is for setting the LAV,LSV,LLV whatever you prefer to call it,it adjusts the fluid pressure to rear brakes depending on the weight on rear axle.
Supposed to stop rear brakes locking up when empty,allows more fluid pressure when loaded...

[MinorMatt]

Graph is for setting up the brake load apportioning valve... don't worry about it.

Connection is vehicle speed sensor - which runs the speedo

[Danrad]

Many thanks to Frag and others for prompt and informative reply - I have learned something new. I like to understand what I am looking at.