My friend has a Studebaker shop here in OC. He has purchased a couple of aftermarket 12V solenoids and has not had good luck. They are exact copies of the AC Delco unit but the coils heat up after a short while and stop operating. We did however swap the parts to use with some original coils and were able to salvage a couple of older ones.
Fred


1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine