have no main beam at the moment so looking at the relays there are two under the fuse box. One is 2(4)x21w and 3 terminals pn 111-953-227A, the other 2x150w pn 411-941-583B with 5 terminals which I guess is the headlights. VW heritage has the 111-953-227 but with subscript D, but not the head light relay, their number is 111-941-583/AC. Are these interchangeable?