I know Paladin and I have both installed this Turn Signal Conversion Kit for Stem Mounted Housing Style and I for one think it works very well.  Paladin tried it out and liked it and that was enough for me since was just shy of the cost if it wasn't bright enough.  I think it is.  One note of caution: I am pretty sure its sensing circuitry will only work with actual bulbs and not if you've installed LED clusters.  It uses LED clusters and so doesn't pose an undue additional strain on your electrical system.  You keep your amber lenses and the LEDs produce red light.  That way you can have red lighting for most purposes (running and brake lights) and amber turn signals.  I installed mine about a year after installing a brakelight modulator and the whole shebang works together well.

my s 40 just has regular turn signals in the back..i ve added 2 led license plate bolts tyed to the brake light,also 2 small led bullets mounted to the side of the license plate/tail light  bracket tyed to the running lights...have considered adding another set off red running lights, theres a bracket that mounts to the license plate bolts that you can mount wires through the stem style  lights...if you look at the project as an upgrade it wont be a hassle...unless you learn to tinker,then none of its a hassle just fun..

The rear turn signals can be amber or red.
The rear running (tail) light must be red.
The brake lights must be red.

Many ways to do this.

You could add a pair of dual filament red lamps, or dual intensity red LEDs.  Simply tie into the existing brake/run leads going to the tail light.

You can get the above conversion that Savage_Rob and I did.  Involves snaking wires along the existing wires, adding the small solidstate adapters under the seat.

You can convert the existing turn signals from single filament to dual filament, switch to red lenses, and add a logic pack under the seat to convert from separate stop/turn leads to a single lead -- said converter is a stock item in trailer towing packages.  Red lenses, AFAIK, are not available -- just clear lenses which you could dye red.

I consider this a courtesy item, for those who do manage to see what they are looking at.  You still need to watch those approaching your rear and be prepared to dodge to the side if they are about to drive through you.

Hazzard lights are needed if broken down in a traffic lane.  The savage can easily be moved off to the side and thus has no need for hazzard lights.

I used that same turn signal conversion kit on my 05 S40 and I love it .I changed to clear lens, the only problem I had was that I had to notch out the inside of the lens to make the LED ring fit in.

Hmm better check your state laws 1st.  Here in SC you cant have running lights on the back of your motorcycle because it looks like you always got your brake on and stuff.