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Guy,
The headlight switch does not need to be grounded.
I think you are probably looking at a bad connection or a broken wire, that=
makes contact when you hold the housing a certain way, then opens up when =
you hold it a different way. Could be inside the switch, could be one of t=
he wires in the column.
As an EE friend of mine used to say, a test is worth a thousand theories. =
Probe the red with green wire with a suitably grounded test light, at the s=
witch, then move things around until the lights go out. If the test light =
stays lit, the problem is between where it is connected and the lights. Ot=
herwise the switch is bad. (It=E2=80=99s quite possible for one switch con=
tact to fail or become intermittent while the others still work).
-- Randall
From: G.D. Huggins
Sent: Sunday, November 3, 2019 7:32 AM
To: Triumph Mailing List
Subject: [TR] TR4A Parking Lights
Accidentally, I jostled the bell-shaped upper part of the steering column t=
o which the switches are secured, and they came on!
On closer inspection, that bell-shaped part is separate of the main steerin=
g column, and had become loose.
I manipulated that bell section and the parking lights would come on, or go=
off, depending on what I was doing.
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--></style></head><body lang=3DEN-US link=3Dblue vlink=3D"#954F72"><div cla=
ss=3DWordSection1><p class=3DMsoNormal>Guy,</p><p class=3DMsoNormal>The hea=
dlight switch does not need to be grounded.</p><p class=3DMsoNormal><o:p>&n=
bsp;</o:p></p><p class=3DMsoNormal>I think you are probably looking at a ba=
d connection or a broken wire, that makes contact when you hold the housing=
a certain way, then opens up when you hold it a different way.=C2=A0 Could=
be inside the switch, could be one of the wires in the column.</p><p class=
=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal>As an EE friend of m=
ine used to say, a test is worth a thousand theories.=C2=A0 Probe the red w=
ith green wire with a suitably grounded test light, at the switch, then mov=
e things around until the lights go out.=C2=A0 If the test light stays lit,=
the problem is between where it is connected and the lights.=C2=A0 Otherwi=
se the switch is bad.=C2=A0 (It=E2=80=99s quite possible for one switch con=
tact to fail or become intermittent while the others still work).</p><p cla=
ss=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal>-- Randall<o:p></o=
:p></p><p class=3DMsoNormal><o:p> </o:p></p><div style=3D'mso-element:=
para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0i=
n 0in 0in'><p class=3DMsoNormal style=3D'border:none;padding:0in'><b>From: =
</b><a href=3D"mailto:gdhuggins@genfiniti.com";>G.D. Huggins</a><br><b>Sent:=
</b>Sunday, November 3, 2019 7:32 AM<br><b>To: </b><a href=3D"mailto:trium=
phs@autox.team.net">Triumph Mailing List</a><br><b>Subject: </b>[TR] TR4A P=
arking Lights</p></div><p class=3DMsoNormal><o:p> </o:p></p><p class=
=3DMsoNormal>Accidentally, I jostled the bell-shaped upper part of the stee=
ring column to which the switches are secured, and they came on!</p><p clas=
s=3DMsoNormal>On closer inspection, that bell-shaped part is separate of th=
e main steering column, and had become loose.</p><p class=3DMsoNormal>I man=
ipulated that bell section and the parking lights would come on, or go off,=
depending on what I was doing.</p><p class=3DMsoNormal><o:p> </o:p></=
p></div></body></html>=
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