SWI-PS/SWI-JACK install problem. Help!

[QuickSpeed3]

I just installed my SWI-PS (hooks up the same as SWI-JACK) and it's not working. Basically i ran power, ground, and the white wire to pin 9, according to the instructions. Is that all i need to do?

It seems it won't program the buttons on the steering wheel. When i'm in program mode, it doesn't register the buttons when i push them

Any help guys?

[Katonk]

When I installed a SWI-JACK in my '05 3 for a Kenwood, I followed a very good walkthrough on another forum (sorry, can't link to it) for installing a SWI-PS like yours. Turns out the instructions that come with the unit evidently leave out a step that is specific for our 24-pin Mazda harness.

The Pin #10 wire on the factory harness (white with black stripe and silver dots) needs to be connected to ground. The #10 wire is right next to the #9 wire that you already connected to the white SWI wire.

I tapped the #10 wire into the same ground wire I used for the black SWI wire grounding.

If you want confirmation of this, you can go to the PAC site and use the Application Guide link, select SWI-PS and Mazda, and then 24-pin connector on the next window. A different set of instructions than the one that came with your SWI will come up which includes this 4th connection.

Hope that helps.

[QuickSpeed3]

Yeah, that solved it. Now it seems to be working..

Wow, that sucked..

[Katonk]

Glad it worked out. Since I had already seen the walkthrough BEFORE I got my SWI-JACK and saw the included instructions, I was wondering how many other Mazda owners ended up scratching their heads asking why the thing wouldn't work since I saw no mention of the 4th connection.

[Chuckles]

I realize this thread is some months old...found it by googling.

The SWI-JACK instructions I got from the web (i.e. up-to-date ones) say to ground pin 10 "if possible". In fact it is essential. I found this out by using an ohmmeter...from 9 to ground is open circuit unless 10 is grounded.

I wonder why the wiring harnesses from Scosche and Metra don't have these pins.

[warrior1]

I wonder why the wiring harnesses from Scosche and Metra don't have these pins.


i wonder why too. :mad:
i am one of those mazda owners scratching their heads.
i am installing an alpine with the swi-jack and am having problems also.
i will try this.

thanks.

[Chuckles]

I e-mailed Schosche and they said they had no pins to hand out, but they would send me an entire second connector for free, and I could pull the pins out.

It so happens that I had a Scosche connector I didn't need, so I removed some pins and put them in the Scosche I was using. This way, I made no modifications to the car's own connector.

Meanwhile, I don't have the free Scosche yet so i can't confirm that they will really send one vs some guy promising something he couldn't/wouldn't deliver.

[Chuckles]

I got the free extra harness from Scosche via UPS yesterday. Very nice of them, considering how cheap the original purchase was.

[blacksheepms3]

Sorry for the noob question. It's my first time tinkering with car audio. Where can I find the "24-pin Mazda harness" I got the swi-jack and I'm ready to hook it up to my aftermarket Kenwood HU. And there is a 1/4" jack and a blue/yellow wire on the other end of the unit (opposite of where the white wire and a bunch of other wires)..Where do I connect them?

I have a Kenwood KDC-BT742U and it's great. I added an HD adapter and it's workin great. I got the Alpine MRP ampli, and kicker C 10. On front doors I got Pheonix gold Mid speaker, crossover and stock tweeter for now. It sound so different from stock.

A little help please guys.