Has the 2006 GTX (155hp) been prewired for a OEM depth guage?

When the guages first come on after plugging in the key the depth comes on along with everything else.

The dealer tells me that only the LTD has the depth guage. Can one be installed on my standard GTX? I really don't want an after market guage on a new ski.

Any info. about part numbers, cost and instructions on how to do would be a help.