[TR] TR3 Horn Wiring

Geo Hahn ahwahneetr at gmail.com
Thu Aug 27 08:36:31 MDT 2015

Keith -

As I recall, the horn doesn't care.

You probably know this but NG is fused power and (as is usual for brown
wires) always hot even with ignition off.  NB is the ground provided when
the horn button is depressed.

A black tracer generally indicates a switched ground (e.g. the wiper
motor's GB wire).


On Thu, Aug 27, 2015 at 6:58 AM, Keith Stewart <keithstewart at bell.net>

> The twin horns on a TR3 have two electrical connections each. The wiring
> diagram shows these as Brown with Green tracer and Brown with Black tracer.
> Is there an orientation to which wire attaches to which connector on the
> horn? If so, what is the impact of attaching them the wrong way? As always,
> thanks for your input and feedback.
> Keith Stewart
> keithstewart at bell.net
> ** triumphs at autox.team.net **
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