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Help with Tachometer Install Please

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Old Aug 6, 2012 | 03:45 PM
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firstrock
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From: Indianapolis, IN
Default Help with Tachometer Install Please

First off, let me say that any advice is greatly appreciated!

Background:

I am no stranger with wiring and/or diagrams. I just don't it often enough to be 100% certain, therefore I am asking for your comments on this install.

Issue:

I recently purchased a mini-tach for my 07 Sporty. It has two wires coming out the back; Red and black. When I look at the wiring diagram in the HD service manual, I have identified the light green/violet (LGN/V) wire as the data wire.



Before we go any further, a few assumptions:
  • My bike is a 1200L, not a 1200R as indicated in one of the diagrams, so.....
  • I will need to tap in to the LGN/V wire to get RPM data from the ECM
  • I assume that the main harness wiring connector (20B) is where the LGN/V wire should be tapped in to?
So, can I just splice in to the LGN/V wire before the main harness connector (20B), splice this to the RED wire from the tach, and then connect the BLACK wire from the tach to any good ground?

In theory this sounds good to me but what about power for the tach lights?

I wish this would have come with instructions!!
 
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