On Board Scale Sample Leads

We are looking for an on board scale system for heavy haul tractor and trailer. We need a way to weigh each set of axles, 4 axle tractor, 2 axle jeep, 3 axle trailer and 1 axle stinger. All on air. Something measuring weight, not air pressure. To mount on the tractor and trailer at each axle location.

We have just purchased a used 1994 mack packer.It has onboard scale plus an dp8340 printer but do not know how it all works as the wires to a computer ? or what ever is missing so any help to get this up and working would be a overload saver.

We have KW T660's with 38,000 lb rear ends and we haul up to 80,000 lbs. We are looking for a handheld onboard scale (preferably) for dedicated truck and trailer combinations.