Aux input with Aftermarket Headunit

So is there anyway to use the factory 3.5mm aux plug with my aftermarket head unit I have a pioneer 5500bhs. Thanks

 

I have an Avic z120bt and i have the aux plug hooked up as the input on the video 2 port, i unfortunably dont know how the shop wired it but I do know it can be done.

 

Wonder if anyone else has any info on this

 

.

 

I figured this out

 

http://www.monoprice.com/products/p...&cagpspn=pla&gclid=CMXUuvTi37kCFS1p7AodkyQAow

 

What did you do?

 

Got the axxess steering wheel control interface but also got the plug an play kit for the Toyota and it has RCA's that your to plug into the input on the back of the new head unit but I got an adapter to convert the rca's to 3.5mm jack an plugged it into the aux port on the new head unit. Something in the steering wheel controls makes the factory aux port signal go to the rca's. Hope this helps and is understandable