Lots of posts on issues with the " Smart Wheel " in both the Freightliner and Spartan chassis forums .
The wheel mounted switches; communicate , through the wiring in the " Clock spring " so called because the internal wires wind and unwind; like the coil of a clock spring; as the steering wheel turns. The signal then goes to a control module that signals the ( hopefully correct
) requested system to function.
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.