Punto (Mk2/2b) Why Doesn't my new aftermarket stereo doesn't work

The later mk2s and the mk2b series of punto swapped from the conventional system of a power signal stereo to a Canbus stereo

Canbus is great in a sense, as it can quieten the radio when your going slow, but nudge it up when you giving the car some hell
Or when (if fitted from factory) you receive a call and it'll sort it out for you

The problem been, most aftermarket radio's work on the old style of a power signal, where as the canbus is the cars body computer controlled, IE the car tells it to turn on and off via a data packet instead of a 12v electrical jolt

When you plugged your new stereo into the car, the stereo was only getting 1 of the 2 power feeds that it requires, hence why people often say they hear the stereo spool up - but not switch on
as the permanent power feed is there, but not the jolt of electricity to tell it get it lazy bum moving

To fix this - we ignore the canbus side and add a 12v "switched or ignition" signal
This comes from 1 of 2 places on the punto

You drop a wire down the back of the central dash near the stereo and wire it into the loom for the cigarette socket wiring making a fixed connection

Or my option which i think is easier
You use a piggyback fuse like such

Why do i use one of these?
A - the current been drawn is tiny
In-facthere is me measuring it right now


That's 0.36milliamps = Less then 1ma (this will be different from stereo to stereo and brands / models etc - Mine is a cheap Ripspeed unit that tbh junk)

B - should the wire that goes to the stereo become damage and short, its cut off at 2amps via the fuse in the piggyback holder, If hard wired into the cigarette socket wiring, it'd have to handle 20amps before blowing the fuse....
2amps = much sooner, less chances of a fire

C - I Cba to spend time stripping the center console out to get my soldering stuff out to make a sound connection

D - its not that expensive, and should i wish to remove it - i can do much more easily, or even disable it (pull fuse out)

So which option you going for? Option 2 I thought so