Hmmm. My car stereo is dead & I'm getting a new one installed. Strange thing is, if I wanted a Clarion head unit to be installed rather than the Pioneer head I'm getting installed, there needs to be re-wiring. However no re-wiring is needed for the Pioneer because it uses the same setup as the JVC that was in there.
Somewhat unrelated: I was trying to pay for the new radio & installation using a card. But it kept declining my PIN. Across the road is my bank so I dropped in, wondering why my PIN & card wasn't working. The lady at the bank said she couldn't help me & gave the card back to me.
Turns out I was trying to use my mum's card (I'm doing the shopping after this) with my PIN. Rookie schoolboy error.
I'm used to using my Virgin Money & Virgin Global Wallet cards rather than my actual bank's card.
*facepalm*