ok, cool.

 

After I engage the CDL the truck needs to roll about 20ft. for the light to on. I didn't figure this out until I was on the trail using it. When I first tested it after installing the '04 linkage I just engaged it sitting in the garage and the light didn't come on.

 

Should I drive the truck on the normal road in the number 1 or the number2 listed above?

 

Number one.
All the way back and to the right= normal dry or wet roads.
All the way back and to the left=snow covered roads/wet sloppy dirt roads
All the way forward and to the right=pulling the boat out of the water
All the way forward and to the left=steep muddy hills, deep snow, off road moderate to difficult trails
All the way forward, left or right is low gear, below 30mph
All the way back, left or right is high gear, anyspeed

 

Ok, so back and to the left, correct. The shift pattern is a "H" pattern correct?

 

Yes it is a "H" pattern, and no, back and to the right.

 

My bad, that is what I meant . I had my first trip in the disco right now, went around the block. Now I gotta get the Check engine light turned off. Will driving with the light on cause any damage or worsen my fuel economy?

 

No driving with the light on will not hurt anything as long as the problem has been corrected.
Same with the fuel economy. If it is on because of bad spark plugs then yes, it will hurt something and cause bad MPG.
So the first thing you need to do is reset the light and see if it comes back on. Then read the codes and see why it is on.

 

I just drove the truck again. This time in 4wd high. A problem though....first time I drove it in low fine (forward to the right), then I try driving in High (back to the right) and I try to start going and it is surging like it is not really in gear but I put it all the way into gear. Any suggestions

 

Drive at idle and make sure that it is in Hi. It can feel like it is in but not be all the way in.