I made a simple plate that screwed in across where the tweeters were, and the Focal tweeter then attached to that. All pretty easy.
Rusty, so you didn’t use the cross over connectors? I did. (Pretty sure I read somewhere that it was best to use them). But I am not sure how the wiring works, is there a separate woofer and tweeter wire all the way from the amp, or does the same cable split when it gets to the door?
If the amp has the crossover, then I have another cross-over filter which may mean I am filtering out some of the range.
I am not 100% happy with how it sounds, and have thought about getting a new amp or running the speakers direct from the head unit. But removing the ‘extra’ crossover would be cheaper!
I am in a PRHT NC1 by the way, with a Pioneer DAB double din head unit.