Headunit Install

[PSBS]

Hi all. New to this forum so cant access all areas yet.
Had my Caddy a week & already not having aux/bluetooth/handsfree has killed me!

I have a double din headunit (Sony) from my old van.
I have a fascia adapter & wiring loom.

Now ive come to fit it but am left with 2 wires - 'Ignition Switch' & 'Illumination' as shown below;

Where do i run them? What exactly do i do?
Im familiar with basic wiring so have no issues doing it, just want to save the hassle having to take the van apart finding the answer!

Any help appreciated!

[PSBS]

Anyone able to help? Sat collecting dust now

[stan-the-man]

What year is your van? Theres no switched live at the radio plug but it could be taken from near by, same goes for illumination feed.
Regarding second your heater panel should have grey/blue wire in 20 pin plug (T20/17) you could take it from there.
Some info about your car would help.

[PSBS]

Hi thanks for the reply.
My van is a 2007 plate 104 tdi.

So are you saying take the illumination feed from the grey/blue wire on the heater controls???

Where's best to run it off the live off nearby?

[stan-the-man]

Correct!
Does your van have "smoker pack"? I mean the cigarette lighter has a light ring around it? It would have same wire there too for illumination, probably easier to access too. If your cigarette lighter has black ring around it, it wont have the wire.

Ill see where would be handiest ignition switch feed...

[PSBS]

I honestly don't know without looking in the van tomorrow! Ha.
But getting to the heaters shouldn't be too hard.

Just the Ignition Live remaining. Thanks dude

[stan-the-man]

Does your van have standard heater or a/c or climatronic?

If standard heater I think the T20/19 black/blue is switched live but would have to double check...

[PSBS]

Standard heater!
That's brilliant tho if I can run both off the heater wiring!

[PSBS]

Just checked, lighter doesn't have illumination ring, so it looks like il have to go off the heater controls with that!
Have you be able to confirm using the switch wire from the heater controls?

Thanks again!

[stan-the-man]

I would be 85% sure it would be switched at that location. My computer has crashed last night so won't be able to confirm 100% until later today

[PSBS]

That's okay mate. Get back to me when you can
Appreciate the help so far!

[Shiprat]

Following this since I'm gonna install a new head unit this weekend I think.

Do any of you have a problem with engine whine coming over the speakers?
I was toying with the thought running power directly from the battery for the stereo to get rid of interference and putting a relay controlled by a switched live to open and close that feed.
It might be a bit complicated but on the current original RCD300 there really is an awful lot of whine.. I'm gonna be running a feed for a sub anyway so might as well.

Sort of like image below, I believe the Sub waits for a signal from the headunit before starting up so should be okay to have it before the relay.

[stan-the-man]

It should be good feed bud!

[PSBS]

Shout out to Stan-The-Man!
Certainly lived up to your Username with the help given above!

Got this in today, took all of 10 mins with the above advice.
Completely updated the van! No more radio rubbish, adverts, talking, rubbish music!!!!

I actually think it looks at home without being too flash!