HL10 Generator Trailer 1:16 scale for RC trucks

RC trailer generator set of the HL10 so I can use with a 1:16 scale GAZ 66.
Additional parts needed:
1.5mm metal rod
1.5mm copper wire
21 x 2mm screws

Use the copper wire to form a hook

Cut the metal rod long enough to insert in each wheel along the length of the axle, add at least 2 tyre bearings along the rod to sit inside the axle and add a wheel shim to either side of the rod before gluing the rod into each tyre