In a message dated 7/25/2000 12:28:51 PM Eastern Daylight Time,
owner-triumphs@autox.team.net writes:
> Listers
>
> Yesterday, after filling my gas tank on my 74 TR6, I tried to start the
> engine, nothing happened when I turned the key.
<snip>
Jim,
Your ignition switch ('74 model) should have 6 wires attached. These six
wires extend about 6 inches or so, where five of them teminate in a plastic
multi-pin connector.
1) White/red. This is the starter lead, which goes to the seat belt module,
and is hot when the key is in the "start" position. If the seat belt
interlock system is satified, power is then sent from the module to the
starter.
2) Large Brown. This is the main power feed from the battery/alternator to
the ignition switch. It is spliced to the small brown wire from terminal 4
(see below). It is hot all the time, and is NOT fused. There is only one
large brown wire at the switch, but there are two large brown wires at the
same pin on the multi-pin connector. The other one goes to the starter relay,
and from there, it goes to the fuse box, where it provides power to the
"purple" fuse.
3) White. This is the main output lead from the switch, and is hot when the
key is in "run" or "start." After it leaves the multi-pin connector, it runs
into the harness a few inches where it is spliced to four other white wires -
one to the alternator warning light, one to the ballast resister wire, one to
the voltmeter, and one to the fuse box for the "green" fuse.
4) Small Brown. This wire is spliced to the large Brown wire between the
switch and the mulit-pin connecter. It is, therefore, connected to the
battery/alternator, and is hot all the time. It provides power to the
brown/red wire on pin 6 when the key is off.
5) white/pink. This is the accessory lead for optional radio. It is hot when
the key is in "run" or "accessory."
6) Brown/red. This is the power feed to the anti run-on valve, and is hot
only when the key is "off." It receives power from the small brown wire on
pin 4.
There should also be a black wire with a "spiraled" green stripe coming from
the body of the steering column lock/ignition switch assembly. This is
grounded when the key is inserted, and is part of the seat belt system, and
it also provides a warning that the key is in the lock when you open the
driver's door.
I know this doesn't match any thing you have, but this is what I found when I
traced the wiring on an original '74 model, and it jives nicely with with the
rest of the wiring circuit and the rest of the information I have concerning
the '74. I also have one in my hand at the moment from a '75, and it is the
same.
This doesn't directly answer your question, but you should be able to use it
to solve your wiring problem. It appears that some one has messed with your
wiring, maybe replaced the switch at some time.
Dan,
Triumph TR250 - TR6 Electrical Maintenance Handbook.
See: http://members.aol.com/danmas6/
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