I actually used a standard automotive relay available at Canadian Tire for around $5.
http://www.caraudioforumz.com/instal...bypass-263025/
that link will give you the info you need about how to wire it. If you want to go the "official route" this [ame="http://www.amazon.com/AVH-X1500DVD-AVH-X2500BT-AVH-X3500BHS-AVH-X4500BT-AVH-X5500BHS/dp/B00A9AQPUU/ref=sr_1_1?ie=UTF8&qid=1380999115&sr=8-1&keywords=pioneer+bypass"]Amazon.com : Parking Brake Override Bypass Fully Automatic Video in Motion for Pioneer Models AVH-X1500DVD AVH-X2500BT AVH-X3500BHS AVH-X4500BT AVH-X5500BHS : Electronics[/ame] is the prebuilt one from amazon but i couldnt find it easily in Canada.
Let me know if you need anymore help. Do a little research and make sure the Z150 uses the same double pulse as the X5500 (which is what I have). I cant find any official documentation on it.