with a dashboard charge light, should it be wired from the alternator and from the and the plus side of the battery ?
ive rewired my car, and seemed to of cocked up the charging light ??
regards
steve
that is correct.
one side of lamp goes to switched 12 V and other to alternator.
note that this is not the main alternator output but the charge lamp terminal. (for wnt of a better description).
if your lamp is a LED, then it can only be wired one way; for a filamnet bulb it does not matter.
will an LED lamp have any problems lighting up properly. what with the alternator 'exciting' itself etc, will there be any issue with the
tiny amount of current needed?
reason why i ask is because i got a starter button with led light, i want this to light up when the engine's not running, and go off when it is
(like the battery light)
i also want a battery light too, so will both wired in be a problem?
sorry to hijack
Thanks guys, i thought i was right but it didnt work, so will look at tomorrow
regards
steve
Wire the LED up via the oil pressure switch.[
quote]Originally posted by blakep82
will an LED lamp have any problems lighting up properly. what with the alternator 'exciting' itself etc, will there be any issue with the
tiny amount of current needed?
reason why i ask is because i got a starter button with led light, i want this to light up when the engine's not running, and go off when it is
(like the battery light)
i also want a battery light too, so will both wired in be a problem?
sorry to hijack
^ ah, good call! hadn't thought of that
cheers
An LED may not pull enough current to excite the alternator.
quote:
Originally posted by daviep
An LED may not pull enough current to excite the alternator.
Not convinced the diode is really needed in the above; there should be no back feeding from the alternator. If there were then it would cause problems with a conventional filament lamp as well.