No pic, but only cuz I gave it to a buddy for his. Real simple though. Just pull the cap off and work the key. You'll see the square tab/latch the key operates. Just grind away the nose of the lid till you can get your finger in there. It's real easy to push when you apply downward force on the lid. I've got a different idea brewing which is to attach an aluminum knob to the key, leaving it as a semi permanent fixture in the cap so I can remove it to operate my seat lock.
*****Here's a super slick upgrade I did to mine.....Speedhut in Utah makes custom instruments including a GPS powered speedometer. Available in 4" or 3+". You can select any combination of font, face color, lighting and custom graphics. I did mine in 4" w/ a Yamaha tuning fork. Fabbed up a plate that uses the stock mounts. You can get a speedo delete spacer for the front axle from Hughs Handbuilt....It's sweet. I also installed a hydraulic clutch from Hughs as well, though I found out the same unit is on Ebay for 1/3 the price....Still debugging a few things; hope to post some pics soon.