Wiring up new head unit (diagrams attached)

E910 · **Posted:** Sat Mar 14, 2009 7:21 am

Ok so I've finally got around to installing my Alpine head unit I bought a few months ago. I decided to cut & solder rather than use the iso loom thingies.
First problem I struck was the brand new soldering iron I got yesterday shat its self after one solder. Not sure what happened there but I turned it off as the cat stood near it & I could smell burning. When I turned it back on it wouldn't go.
I though I'd use my down time to figure out what wires go where to speed things up when I get a soldering iron that works.
I've found this pic xnickx posted up but there seems to be a lot less wires than pins? Anyone wire one up before or have you all used the adapter looms (which maybe I should be?)

Dan · **Posted:** Sat Mar 14, 2009 3:14 pm

just spend the dollars and get the iso adapter! saves you butchering your wiring . could work out more expensive you you mess up with the soldering, ie solder cat to power wire!

Rob · **Posted:** Sat Mar 14, 2009 5:48 pm

E910 wrote:

as the cat stood near it & I could smell burning.

Cats have been known to sabotage wiring projects:

As Dan said, getting the wiring loom could save you from disaster.

KaTaLy5t · **Posted:** Sat Mar 14, 2009 10:52 pm

I agree with the lads on this one.

I'm an electrician and I didn't fancy the job of doing all that so I just bought the bypass lead.

E910 · **Posted:** Sun Mar 15, 2009 10:37 am

Thanks for the funny replys guys. Gave me a laugh this morning (cat ended up being project manager watching over me)
I went against all your advice & carried on with the cut'n solder. Bought a proper soldering iron (will get a refund on the broken one tomorrow). Got a couple of handy diagrams off another forum which made it so much easier. She's all up & running now. Will get some pics up for y'all soon

If anyone else wants to install their own aftermarket head unit here's the wiring guides I used

*The bottom half of this guide is for GPS only

OEM Plug Side - Speakers
RH F + = Green
RH F - = Blue
LH F + = Pink
LH F - = Purple

RH R + = Red
RH R - = White
LH R + = Black
LH R - = Yellow

http://www.installdr.com/Harnesses/Toyota-Wiring.pdf

KaTaLy5t · **Posted:** Sun Mar 15, 2009 12:49 pm

Well done bud, top marks for sticking with it anyway.

Maybe Noel or Dan could take those diagrams and make them a sticky in the "How-To" section??

podgie · **Posted:** Sun Mar 15, 2009 11:35 pm

if only i had that digram a few days ago

E910 · **Posted:** Mon Mar 16, 2009 6:03 am

Here it is in all its Alpine glory + my grubby finger prints

Evelyn · **Posted:** Mon Mar 16, 2009 10:16 am

Fits in good looks well :mrgreen:

KaTaLy5t · **Posted:** Mon Mar 16, 2009 10:08 pm

Looks well bud. Did you get a Toyota Fascia??

E910 · **Posted:** Tue Mar 17, 2009 6:11 am

No, got an American brand Scoshe. Brought it off our local version of ebay called trade me for the equivalent of €24 delivered.

KaTaLy5t · **Posted:** Tue Mar 17, 2009 1:59 pm

That one matches in really well with the dash. I have the audio leads one and it doesn't match that well but it'll do

Bubbles-Tezza · **Posted:** Sat Apr 04, 2009 1:16 pm

Hey guys
I changed the head unit in my tezza also.
After bein quoted €400 to get the new radio fitted i tackled the job meself.
It cost me €35 and didnt cut any wires.
A wiring lumb for a toyota MR2 from auto leads fits perfectly. Just plug in and away it goes.
My car is 99 and doesnt have a seperate amp.
But i think fresher tezzas form maybe 01 do have but think it should still work if u bypass it.

todd · **Posted:** Sat Nov 21, 2009 11:34 pm

Does anyone have the part number for the autoleads bypass cable?

Is there just one or do I have to check which amp I have?

Wiring up new head unit (diagrams attached)

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