the 2wd loom uses the same loom as the 4wd car

the only difference is that the 4wd door use the oppositte locking mechanism, so when you "lock" the doors on the 2wd car the loom will "lock" the other door

but on the 4wd doors when you "lock" them, the 2wd loom thinks they are "unlocked" and goes bonkers

you just have to switch the trigger wire over and job done

also, the 4wd locks are much better with cable operation than the 2 rod 2wd arrangement