Some guys call this the "shop manual". The formal name is "service manual" in case you're trying to do a web search for one. What is it? It is the absolute key to life. With a good service manual and a little bit of courage you can do just about any task at all with your bike. Fortunately Suzuki makes the best service manuals I've ever seen, on any car or bike. They will take you from a symptom, like "the battery runs dead", and walk you through an organized series of steps to arrive at a resolution of the problem.
This is the same manual that an authorized dealer would use in order to diagnose and repair a problem, or to perform routine maintenance. Even if you only plan to change your own oil, brake fluid, and coolant, you need one of these. It will give you the confidence to fix most things yourself. You'll learn an incredible amount about your bike. You'll develop the confidence that comes from being able to handle it yourself instead of yelling for help like a little sissy, every time a bolt needs to be tightened.
This is also the place where you'll find the wiring diagrams, which you'll need to do things as simple as installing a new flasher relay, or installing new turn signals. Please take my advice and get yourself a proper service manual NOW. Playing it cheap is not the way to go - when you blow your own nuts off and set the bike on fire, just because you didn't want to spend $10 on a service manual, you'll wish you had listened to me.
Go to TOPI'd strongly recommend you buy the real, printed, service manual for your bike - meaning the actual manual made by Suzuki. Do not buy some other manual that you'll find in the mall bookstore. Those are incredibly superficial, and will not give you much more information than you'll find in your owner's manual.
The printed Suzuki manual will probably run you about $70, but is well worth it. You'll find various places around the web where you can get a .pdf format version of your manual for as little as $7. Many of those are pirated of course. It's just not as easy to look at a laptop computer while you're down under your bike, as it is to have the printed manual right next to you, where you can refer and scribble notes with a pencil as you go.
Check these places shown below, and they should get you set for your proper service manual. Go to Ron Ayers first.
You can also try these sites to see if you might still find some manuals for download. Part of the trouble is that these files can be quite large, so the bandwidth gets expensive. So these sites tend to come and go. But take a look, if you don't feel like paying the cash for a print manual. But I still think the print version is what you really need when you're out there in the garage.
(free)
(must be paying member, then go to "Club Red R") Over the past few years I've come across these diagrams that may be a help if you do not have the service manual. When someone sends me one, I'll post it up - so if you have a service manual with a wiring diagram that you do not see listed here, please make me a copy of the wiring diagram at the highest possible resolution and email it to me. I'll post it here so that other riders can get some help!
2001 - 2003 GSXR 600 wiring diagram
1996 - 1997 GSXR 750 wiring diagram
1998 - 1999 GSXR 750 wiring diagram
2000 GSXR 750 wiring diagram
2002 GSXR 750 wiring diagram
2001 GSXR 1000 wiring diagram
2002 GSXR 1000 wiring diagram
2003 - 2004 GSXR 1000 wiring diagram
2005 GSXR 1000 wiring diagram
2005 GSXR 1000 wiring diagram - color
2007 GSXR 1000 wiring diagram