Here is the NAPA switch but like I posted earlier, they couldn't deliver one when I needed it. They may be back in stock by now.

I used a Radio Shack imitation Bosch relay.

"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.