I bought four from eBay to power my headlights and HEI. Mine are 60 amp Bosch style relays that came with the plugs and pigtails. I went with 60 amp because of the 10 gauge wire size. Using a bigger relay than required is OK. HEI distributors draw a high current on startup.

Phil
Moderator, The Engine Shop, Interiors and Project Journals

1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube
Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes
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