Quote:
Originally Posted by x98boardwell
Spuggy, I had looked through that thread but figured it was mainly for older cars. I don't have an LED light which has been replaced nor do I have a diode in place like the earlier cars so still stumped to some extent as to why.
I do agree that there is a resistance problem which is probably the cause for the issue but wishing I knew why or what could be causing it.. maybe the VR..? I'm guessing because the voltage or resistance is off the light won't turn off or allow the alt to start charging..
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Well, my thinking is that you fitted another alternator with your re-jigged wiring, and it works. Which would seem to rule that out. I don't know anything about the alarm module, so I'll just conveniently gloss over that..
Being a later car, you should already have the 4w warning bulb, rather than the earlier 2w, so shouldn't need a resistor either. But clearly there's something odd going on.
I'd lean towards talking to the shop and explain what you see; maybe they can suggest something, or a penny will drop at their end...
Or you could just try feeding switched 12V temporarily into the exciter via a 10 or 15w bulb; see if that makes it suddenly work. Your year should have an internal VR, right - so was that changed or checked?