I had this problem when converting my 510 to the FJ20t engine. To fix it I
had to put a diode in the alternator lamp wire to stop the current flowing
in a certain direction. If you need more specific info on this let me know.
Adam Fox
65 1500
71 2LFJ20 Turbo 510
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> From: Nathen Ruffcorn <nruffcorn@prodigy.net>
> To: datsun-roadsters@autox.team.net
> Subject: Car won't shut off!! (looong)
> Date: Saturday, 16 September 2000 14:44
>
> Hey all!
>
> I spent the day finishing up some of the details of my restoration. Now
> that I'm somewhat legal, I've taken the roadster for several test spins.
> Most everything is working great! I was not prepared for the stares you
> receive driving a roadster that is ALMOST completed. I have been
unwilling
> to do too much driving as it is still waiting for one piece from the
chrome
> shop to install the windshield.
>
> This afternoon I finally got around to wiring the alternater. It's a GM
one
> wire (also has a plug for a sensing wire and lamp wire). After getting
> everything wired, I was excited to finally see the ammeter gauge jump
over
> to the right side, showing that it was charging. Went to shut off the
key,
> motor kept running-flipped the master disconnect switch, motor kept
> running???!!! ;-)
>
> The "sensing" wire on the alt recieves power from the black/white wire
that
> runs through the ignition switch (thought this was correct??). When this
> connection is "open" the circuit is interupted and the engine shuts off
> (with key shut off). It seems obvious power is being fed through the
> switch, not allowing the switch to cut power to the ignition.
>
> I KNOW this is long for a Friday night but does anyone have any thoughts.
I
> don't want to continue to risk my life by pulling off the coil wire to
stop
> the engine! My immediate thought is to install a small relay to cut
power
> to the sensing wire when the switch is powered down, but there has to be
a
> more correct way.
>
> If you read this far-THANK-YOU!! Have a great weekend!
>
> Nathan
>
>
>
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