[vanno]

So as a follow up to my last post. Having done some research, the component fitted to the rear pillar tweeter is a 50v 4.5uf capacitor. Its purpose is to filter out low frequency bass which kinda makes sense. Also running a 4ohm speaker here shouldn’t be a problem as the factory head unit is a 4 x 25w @ 4ohm. I guess if you are fitting an after market head unit which is much more powerful and or additional amplification, you may need to rethink. But to be honest, I am finding the replacement door speakers adequate for my needs. I have found suitable replacement tweeters for the rear so should be a simple fit.