Just came across the most useful information on google groups. For a non-electrical-saavy guy like me, this was exactly what I needed. Thanks Chris!
http://groups.google.com/group/alt.m...8fffa1ef48b5dc
I just put a tach on this weekend on my '02 Heritage Classic. I don't
have the service manual here with me now, but I was thinking that the
wiring harnasses were the same for mine and the Deuce. Could be wrong.
At any rate, I made all my connections at the speedo harnass, 39B. The
power came from the orange/white wire in position one, and the ground
from the black wire in position ten. For the tach signal, there was an
unconnected pink wire with some sort of quick disconnect terminal on
it that was taped to the wiring harnass.
Whatever you do, don't be a dumbass like me and splice the tach's red
power wire into an exising red wire. That mistake of color
coordination had me pretty pissed off the first time I fired it up and
the tach and speedo didn't work. Quick look at the service manual had
me swiftly kicking myself in the ass and tearing the dash off a second
time
Seems to be working good so far, and as I suspected already, I need to
crank down my idle speed. Tach says 1250 when the she's good and warm.
That's about how fast I had figured it was idling.
Posted by: saekyo on Jan 10, 07 4:34:27 am
Tach install on '05 FLHR 
Linear Mode
