Rabbit Idle problem

I just got my 1980 rabbit convertable started. Apperently when i
switched the fuse box i foolishly switched the fuel pump relay with
the signal lights. Dumb me. But know when it starts it Idle's poorly,
it seems to be missing. Prior to the fuse box changed it ran
beuatifully, purred like a kitten. Know it shakes a little. Not like a
diesel, but any shake makes me want to make my diesel change this year
instead of next. Any help on this issue?