Blairm
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| posted on 2/1/05 at 08:34 AM |
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x-flow alternator and ignition issues
Hi,
After many months of procrastination and excuses about being to busy at work I have finally sat down and wired my car.
Most circuits work as I expect except the alternator and ignition. Reasonably important ones I suspect?
The alternator is a Lucus unit with 2 large common positive terminals and the indicator terminal. I have run 2 wires to the battery connected to the
battery side of and isolation switch on the dash, but are un sure as to the wiring for the charge indicator on the dash.
Do we feed 12 volts from the iginition switch in the the light and then connect the ground side of the bulb to the wire from the alternator?
The motor is not a runner yet (plumbing to be finished as well as the iginition problem next) so I am not able to confirm it is charging, but figure
and working charge indicator would be a good start.
Also I have connected the distributor wire to the negative on the coil and are feeding 12volts from the iginition switch to the positive on the coil.
When the motor is cranked I do not have spark at the points. The last owner had the distributor overhauled by an autoelectrican so I assume it is all
good. Any ideas as to where I should start looking for the fault?
Thanks and Happy New Year
Blair
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rusty nuts
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| posted on 2/1/05 at 09:51 AM |
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Try touching a small wire from the coil neg terminal to a good earth point, use a spark plug in the main H.T lead . If you get a spark the wiring to
and the coil are working which leave wiring to distributor and points/ condensor. check /replace as required. Hope this helps Rusty
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Blairm
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| posted on 2/1/05 at 05:21 PM |
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Thanks Rusty,
Just to be clear (its still early down here)
I connect the main lead to the coil with a spark plug in the end with the body grounded and then connect the coil neg lead to a good earth and a spark
should be visiable in the plug?
Cheers Blair
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rusty nuts
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| posted on 2/1/05 at 05:31 PM |
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Yes , but just stroking the wire to earth rather than connecting. if you get a spark it's probably down to points being dirty? Dont wake the
neighbours! Rusty
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Stu16v
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| posted on 2/1/05 at 10:39 PM |
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The wiring of the alternator lamp is as you describe.
The igniton wiring *should* be easy enough to check. get a test lamp, and proceed as follows....
With the igntion on, and points closed, connect one side of the test lamp to the 12v supply on the coil, and the other side to ground-the lamp should
light. If not, power supply problem.
If that is OK, keep the one side of test lamp on the coil 12v supply, and the other side to the coil-dizzy terminal. It should light. If not,
points/dizzy problem. If OK, turn engine so that the points are open, and try again. If the lamp still illuminates, there is still a points/dizzy
problem, but it has been narrowed down to a short circuit inside.
HTH Stu.
Dont just build it.....make it!
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stevebubs
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| posted on 3/1/05 at 12:38 AM |
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Wiring sounds spot-on.
wrt to the alternator, I'd suggest carefully checking the leads and rotor arm for continuity, checking the points gap and then swapping the
dizzy capacitor for a new one (should only be a couple of quid).
(If you've checked continuity and your coil is OK, I'd point the finger straight at the capacitor).
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