Hey I'm new to the world of cars, just bought a fabia comfort, I need to change the speakers in the trim at the back as they don't work, but there is 4 cables for each and on any new speakers there's 2 slots, what do I do? Also what's the best way to wire parcel shelf speakers in?

2 of the cable will feed the speaker and 2 will go off to the tweeter in the A pillar, identify which is which and tap into the two that go to the speaker.

 

Alternatively you can buy adapters i think that will allow you to utilize the speaker feed without chopping any wires.