[DeTomaso] Alternator swap, alternator indicator is on
thomas at hax.se
Thu Jan 17 14:22:25 EST 2019
I've replaced the Bosch alternator in my GT5 with a 130A Ford style
alternator from DB Electrical.
I just started it up to check that everything works, and while it
charges, the alternator light doesn't go out, it just gets a bit dimmer.
Measuring the voltage on the wire to the light I see that it is around
7V, which is about half of what the alternator outputs.
The stator wire should be around this voltage when the engine is running
but I'm surprised that the indicator/ignition wire is at that voltage
too. That seems wrong.
I know that there are owners who have replaced their old alternators
with this type of alternator, how have you solved this issue? Skipped
the light completely or did you not have this problem?
I'm contemplating adding a suitable zener diode in series with the wire,
but it will take some testing to make sure that the current to the
alternator then is enough to excite the field.
I'm also using this wire to engage the DRL:s, so hard wiring it to
switched 12V will kill that functionality too.
Real life: Thomas Törnblom Email: thomas at hax.se
Snail mail: Banvallsvägen 14 Phone: +46 18 32 31 18
S - 754 40 Uppsala, Sweden Mobile: +46 76 209 8320
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