[dameyn]

[QUOTE=toyotaneil]tow prep package is standerd on all sienna's, just needs the hitch and and plug wiring, go see your local Toyota service shop, but other manufacturers also make hitches for sienna, sometimes a wee bit cheaper.

The only tow prep that comes standard with a 2006 Sienna is the transmission fluid cooler, which is built in to the radiator. All the wiring harness, including battery charge line, brake controller line, turn indicator, marker and stop lights, must be installed along with the hitch receiver by the dealer or a hitch/RV shop such as Truckin Thunder, etc. The battery charge and brake controller lines must come from the dash all the way back to the hitch electric receptacle. The complete tow prep kit can be ordered with the van as an accessory, otherwise it's an after-market job. Dale.