[TJ]

On my '40 I did what PGBuick did on his car. I used two stock holes that are between the wiper mount left hand hole and the oval large hole for the stock harness to mount the new harness. I used 3/4 plywood and drilled the holes to fit the firewall and for the harness mounts. I put 1/4 -20 "T" nuts in the wood for the firewall mount and used button head allen bolts to secure it. I use longer button heads to secure the panel to the plywood. I also covered the plywood with black vinyl which blends in with the firewall cover.