OK, the brother decided to get a headunit with an in-dash screen so it has all glitzy functions on it, annoying thing is though he has to hook up the handbrake switched live cable to a parking brake cable for his head unit so it knows he’s got the handbrake on
Luckily you can bypass them by building a relay, this post will show you step by step and how to do it
Pioneer SPH-DA100 Model
TBC…