I'll give you the best little write up I can do on here. I don't know if it is the same for the 650 as it is for the 1000, or which bike you have for that matter, but here goes:
FYI: I opted to keep the stock undertail in place, and just do minor trimming as necessary. Some people trim the stock undertail off where it meets the Hotbodies, but I personally did not like that idea.
I am starting this also assuming that you already got rid of the rear fender.
Disclaimer: You are going to permanently alter the stock undertail with this procedure, so be warned.
1. Remove seat and side plate covers.
2. remove rear seat or cowl.
3. There are four bolts holding the stock undertail to the frame of the bike. Loosen the front two and remove the rear two.
4. Trim the extended sides of the stock undertail, the sections that have the holes for the plastic rivets that held it to the rear bodywork. The new Hotbodies undertail is going to be rivited in there later.
5. Push the stock undertail up into the frame of the bike, making it so that the plastic supports for the rear of the stock undertail are about 1/2 inch higher than original, and look to see where you need to drill a new hole in the above mentioned plastic rear undertail support, to use the stock mounting point. That is a whole lotta words for saying you are going to relocate the mounting hole for the rear sides of the stock undertail.
6. I wanted my stock undertail to be really held in place, so I drilled two more holes in the underside of the stock undertail, so that it could now be bolted, with the stock bolts, to two of the four open holes from the original rear fender mounting points.
7. Get a rough idea of where the blinker wires for the Hotbodies are going to need to come up through the stock undertail, and drill them through too.
8. I personally liked the stock Suzuki blinker connectors, so I snipped them from the stock blinkers and wired them into the Hotbodies undertails wires. The hotbodies comes with LED blinkers, which wil make them blink too fast. You need to wire in a resistor to overcome this issue. Here is what you need for that:
RadioShack
10 ohm 10W 5% Wirewound Resistor pk/2
$1.69
Catalog #: 271-132
and a link to the site that explains it:
http://www.81x.com/WTObjectFrame.aspx?ProjectID=51753&Page=005&RND=683849290
In wiring these in, it is pretty simple. Connect your positives and negative wires for each blinker. Then picture those as being the two vertical sides to the letter "H". The resistor then goes accross, between the postive and negative, making the horizontal section of the "H". Wrap the Resistor with some sort high heat tape, because it will get hot when the blinker is on.
9. Mount up the new undertail with the stock plastic rivets and you are done. I will warn you that I had to push and prod my Hotbodies to get to line up with the rivets holes, but in the end, it saw things my way.
:wink:
Good luck