Defender 90 300tdi alternator problem

redhand said:

My 110 had a split charge system fitted by LR special vehicles. (ex utilities landy) it could be the trigger for the split charge relay???

allus thought it were for rev counter option though.

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wouldnt know without seeing it it may not be std alt ,but is tacho feed for rev counter ,egr needs feed too as function is rev related ,ecu feed wires often dont have std tracer but colour with tracer coloured rings spaced out

The Mad Hat Man said:

how can the alternator know wot yo fool level is?

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The only white/slate coloured wire on the whole wiring diagram lights the low fuel level warning light - not sure why james needs to know that?????

i dont ,but brown yellow wire is ignition light/ exciter and with battery wire is all thats needed to run alt

So why did the guy with the 100amp alternator have to wire it up with the white wire so his alternator/charging light went out.....................................???

he didnt say he did ,alternators have different terminals on the back but they still correspond with what i said earlier

So - just to recap.............. you said you only need 2 wires on the alternator , but as we have seen a lot of people with 300tdi defenders have a third wire - the mysterious "white wire" that is part of the no charge light as i said in post 2 or 3 - but you begged to differ, so we are now on page 7.........................................

we wouldnt differ if you checked the manual wiring diagram i did post a link to one ,and ive listed the uses of 3 wires if a 3rd is fitted

Well - i will say this - you don't give up mate

I'll run my engine in the morning and remove the white wire and see what happens

Might even take a pic of the alternator charge light for you too

because unless its been altered thats how lr built them ,and i do have a fair bit of experience with them rather than just googling

I haven't been goooooogling - what a horrible thing to say

They must have altered a lot of them to 3 wires when you werent looking

DEFENDER90-DAZ said:

I haven't been goooooogling - what a horrible thing to say

They must have altered a lot of them to 3 wires when you werent looking

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not youi mean thats all somes experience is ,a lot have egr ecu,its the same alt used throughout apart from output

My defender had the three wires to the old alternator, my new alternator only had the two terminals so i just didn't bother with the white wire cos it ain't got a rev counter anyway. 3 months later I've had no ill effects.
Rave shows the white as being the signal to the rev counter

I haven't got rave so i can't see their diagram but when did land rover start factory fitting rev counters in to defenders??

DEFENDER90-DAZ said:

I haven't got rave so i can't see their diagram but when did land rover start factory fitting rev counters in to defenders??

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what else might need a feed to give speed indication of engine ?

In a defender - not a lot

have you got an egr ?

nope

have a look at the link

What link????