Tan Distributor Cap vs Black Distributor Cap 4289875

halifaxhops said
In theory to vent ionized air and moisture out, no idea if it works or not for that the distribs have drain holes for moisture.

Forgot I had this other 69 340 dual point stashed away from 10 years ago after digging through some boxes, with a tan cap. Also missing ground wire but eyelet is there.