i installed aftermarket grip heaters (for far less $ than oem) but the install process is the same. Actually, it's one step easier for you since, i assume, the oem warmers already have the proper connector to plug into the empty socket on the vee2. I had purchased the heated grip adapter from eastern beaver. The socket is located just above and behind the radiator on the left side of the bike. The only dismantling I had to do was to remove the pivot bolts on each side of the radiator in order to swing it forward to gain access to the plug. Very simple. Some on this board claim that that socket is not for heated gips, as it's only 3amp. I disagree. I havent tested it but it's got to be more than that since my grips are rated at 4a and i've run them on high w/o issue. Besides, that type of plug is the same one that suzuki uses for heated grips on the 650. They use a different type for the lower capacity accessory plug. If your oem grips have the same type of connector, then obviously suzuki intended this plug for the heated grips.
Other than that, installation is pretty simple. to help get the old gips off, stick a smallish screw driver in between the bars and grip and squirt a little rubbing alcohol in there. That helps them slide right off. Peel away any old glue residue. If your grips didnt' come with any grip glue, just use super glue - that's what i always use. Just be careful with glue around the throttle tube. you don't want that to get stuck.