Peter H,
They used cloth up until until late 1953. My 53, was made in the first part of year and had a cloth wiring harness. You may have some idea where you want to get the harness from. I am not familiar with the companies in Canada. However, if you have not made up your mind, you might want to call YnZ Yesterday Parts. They make a beautiful reproduction of our wiring harness. They can even put in the extra wires for a turn signal option. No doubt, they could make your harness any way you want it. Of course, they don't give them away. I am pretty sure that is the vendor, for a number of the companies that sell our reporduction truck parts. Hope this helps.
Rugo