Thanks Ira, but ...
The 2003 International does not have shock absorbers. AS decided they weren't needed on a dual-axle trailer of this size and weight.
I'll buy the CW system, then, at about $50 more. I need to have the wheels balanced anyway, and that is a very good time to insert the sensors. You buy sensors set for the pressure you carry and they go off at a certain percentage of that pressure.
I want to get them installed before an upcoming major trip.
John W. Irwin
2014.5 Touring Coach, "Sabre-Dog IV"