20 Most Recent 2007 Harley Davidson FXST Softail Standard Questions & Answers

If you want the mechanics of it then try the HD forums. If you want pictures / video try you tube. There's a bit on there.

http://officialharleyparts.com/wiring_diagrams.php

use the mounting points at top of forks that have spots to put handlebars

You have a HARLEY so why not take advantage of the superb self diagnostic system and see what DTCs are set. This will save you untold time, headaches and money. Then if you do not know how to display DTCs or you do not want to find out how to display the DTCs or if you just do on not want a quick and easy diagnosis and fix you could start by testing your engine temperature sender which is likely the problem.