I am fitting a EF steering colum, EL combination switch and steering wheel in my car. Would i have to upgrade my existing cruise control to EF spec in order for all the steering wheel buttons to operate correctly? (The set + and set - functions). As EA-ED didn't have these.

Any help appreciated

just buy an ef/el

hmmm not sure where the loom goes from teh clock spring i imagine to the BEM now bwtween ea-ed to ef el they are different i dont htink it would work, better off changing the entire dash and looms and bem get the airbag working and all.

now if u wernt such a tool there would even be southern member willing to drive up and help unfortunately u are a tool so ull have to go it alone haha