They came with the models Rik, and you've reminded me that the ones on the tourer weren't glued on and are sitting on the bench.
An advantage of my time frame is that there was still many horse drawn vehicles around, so as I had van bodies and two pairs of plastic spoked wheels some research revealed a bakers cart with a very similar style. It required a pair of smaller diameter wheels for the fore carriage so these were fretted out of ply, spokes rounded and steel tyres made and fitted to all four. A timber reach frame with fore and aft semi elliptic leaves (working shackles) at the rear, a fifth wheel at the front with transverse double elliptics, removeable shafts carved from bamboo gave me a platform to build a body chassis with footboard and brakes. An underneath view showing the reach frame and rear spring axle set-up. Front view of the fore carriage, fifth wheel and springs. Body fitted, hand brake assembled, plastic wheel to rear.(temporary pin!)
Next choosing a suitable horse (Schleich Hanoverian Stallion) the making of harness could begin. I still have a few pieces of real harness hanging in the workshop, bit of a soft spot with me. Collar, bridle and bit, reins, trace and breaching straps were made out of very thin leather being rubbed with glycerine to make it subtle. Hames, buckles and hame hooks from wire completed the outfit. Horse with all the gear laid out. Traces not cut to length yet.
Some paint, decals and the completed Bakers cart before a light weathering. Grant.