I agree with, chrysler1941 - fuses are required for safety. Where the insulation and general condition of existing wiring is acceptable and a 100 percent correct restoration is not required,I have used couple of items to improve safety of the electrical wiring.Normally,I would disconnect the battery if it is easily easily accessible and the vehicle is left unattended for any length of time.
On my 1936 DeSoto coupe, I replaced the cable from the battery to the starter and also the ground cable.Because the battery is located under the seat, for convenience the wire from the starter to the rest of the vehicle is through a fuse to a disconnect switch as pictured.
On my 1937 Chrysler,the battery had been relocated to the trunk by a previous owner, I disconnect the battery when not in use. I used an insulated standoff as pictured on the firewall as a tie in point to fused wiring to the rest of the car.I used heat shrink to cover the stud when I finished making the connections.
These parts are easy to find.
Not stock but easily corrected if someone wants to go that route in the future..