I have 2001 TC 2000 the left front speed sencer gave out.I ordered another sencer .Plug. was wrong .Dug into Bendix parts book found I have a W20 .No longer availble use a W24 .Whats the difference ?
Did you mean WS-20 and WS-24? ,, Someone can correct me if I am wrong.... I believe the WS24 is the latest version of their(Bendix)wheel sensors, on the wheel end of the speed sensor is what they call WS24... appears to be made of a stainless steel cover versus the obsolete WS20 was a hard plastic or bakelite type material...
As far as the plug being wrong bendix shows the WS-24 being availible with numerous (7) plug ends. Would have to be ordered vehicle/chassis specific... for instant some of my buses use a BX801552 on the rear axle and a BX 801553 on the front both have the WS24 sensor end and a plug that matches the bus chassis.. Not sure who you are ordering sensor from but should be able to get a number.... hopefully a bendix number from bus dealer that you could give to any heavy truck part supplier and get correct replacment