TEMPERATURE GAUGE info from R1150R.net and Cyclerob.
This temp gauge is by far the best money I've spent so far on my bike! It was purchased
from Lockhart Phillips, a common supplier of aftermarket parts to every motorcycle dealer. The
retail price is $89.95 and it's L/P catalog # 400-34909. It comes on when you start your bike and
both the "Atlanta blue" colored backlight and LCD display is powered by the bike.
The most difficult part of the installation was the need to remove & replace the fuel tank to
access an "ignition key on" power source for a professional installation. I chose to splice & solder
the red (+) power lead to the light green (ignition on) wire in the only orange plug there, coming
from the ignition switch, just under the top front of the fuel tank. The temp units black (-) wire I
attached to the frame using the ignition coil's Allen head mount bolt just aft of & below the orange
plug. Alternatively, you can run the (+) and (-) power wires under the fuel tank without removing it
and find a power & ground source in the fuse box but I thought it best to remove the fuel tank for
a shorter & more trouble free wire routing. What ever wire you end up using, DO NOT use the
crimp connectors supplied. The plate's wire slot inside them is too narrow & it WILL cut some or
your bikes wire strands, weakening it, as you squeeze it shut. Take the time & make the effort to
SOLDER your connection!
For the sensor location I chose a protected location (the drain plug is not one) that would closely
indicate engine oil temp. After close inspection of the entire motor, I found a blind hole the
perfect diameter & depth behind the large black plastic front engine cover, that is a crankcase
wall, several inches above the oil in the sump. This is the only logical location possible without
taking the engine apart to drill & tap the sump wall, down low, where it's submerged in oil. Even
though it's not measuring the sump oil temp, this area is heated by the torrential blizzard of oil fog
& drops inside the engine when it runs. You need to borrow or purchase a 1/8 NPT tap to cut a
few threads in the crankcase hole shown. When tapping the threads, only go in 4 turns to start.
Then remove the Teflon tape from the sensor's threads, oil them & screw it in the hole. Ideally
you want the threads to get tight JUST AS the end of the sensor bottoms out in the blind hole. If
it doesn't bottom out & the threads jam, remove sensor & tap the threads less than 2 turns
additional. Study the pics for more info. Good luck!
--CYCLEROB-The specs are:
 °C or °F switchable.
 Operated automatically & constantly illuminated by your vehicle's 12V power. Internal
battery operates display for 30 seconds after engine is shut off or manually when needed.
 (-)50°C- - - -(+)250°C -OR- (-)58°F - - -(+)482°F
 36x76x15mm & 40 grams - - display case dimensions & weight.
 Sensor thread PT 1/8 (tapered).
See the pictures below for more
detail!