It is normally long enough to reach the bumper plug, but almost everyone I know has on on the side of the bed. I think the main reason is convenience. Especially if you leave your tailgate on like I do. It can become a real pain to reach around and under and such. I think also it's there for some of the sharper turns that you may have to make. It could stretch the limit on a hard turn. It will be interesting to see more responses to this.
Ed and Sharon
2010 Wildcat 28RKBS
2011 Ford F-250 XLT, 6.7L PSD
Ride-Rite Airbags and Airlift wireless remote compressor...nice!
I thought I was wrong once, but I was wrong!