Sup guys..... can we use a stock lq9 harness with a tremec t56 magnum xl ? ARE THERE EXTRA CONNECTORS ? or any extra mods needed ?

 

Yes it will work and there are no mandatory modifications. If you want reverse lockout to work per the factory (rather than completely disabling it), you'll have to tune the PCM and setup the switch. I think it's pin 8, connector 3. It's easiest to setup a simple on/off type button/switch.

 

There are three connectors you will need you can find them on ebay here

http://www.ebay.com/itm/T56-Installation-Set-Backup-Lamp-Reverse-Lockout-and-VSS-Pigtail-Connectors-/251551540156?pt=Motors_Car_Truck_Parts_Accessories&hash=item3a91a3e3bc&vxp=mtr

Hope this helps