How do I lock out the front fork on my RST Neon shock? I have a Trek 7150SE(Scheels Edition) that came stock with a RST Neon front fork. I would like to lock it for road biking but haven't been able to figure out how. 

I tried to turn the top of each side of the fork but it wouldn't budge by hand. I then tried a basic plumbing wrench and if started to strip the plastic. 

Is it possible to lock this fork, and if so, how?
The RST Neon comes both with a lockout and without a lockout.  If your unit has a lockout, it can be found on the right hand side.  By looking at the image of the top right fork it appears that you do not have the model with the lockout.

You can see an example of what the lockout looks like here: http://rstsuspension.com/en/forks/city-trekking/neon