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Alternator light issue
Posted: Mon Jan 17, 2005 8:58 am
by ytt105
I've just bought a 87 RR with many problems. See earlier postings.
One of the problems is that the vehicle has twin batteries wired up by an ignition operated solenoide. Seems to work well, however, the charge light is always on. It does fluctuate sometimes but tends to dim when revs are lower not higher.
The batteries ARE being chraged. 13.3V is being delivered by the alternator consistantly.
I don't think its a problem with the alternator, maybe the jerry rigged wiring.
Can anyone advise what wires should go where on the back of the alternator. Its a 133/65 Lucas.
Posted: Mon Jan 17, 2005 10:17 am
by Maggot4x4
How many amp's is the alt?
Is it possible you have more current draw than the alt can handle?
I know I have this problem as mine is only 40amp and am looking at installing a second alt.
If anyone has any tips on wiring up a second alt it would be greatly appreaciated.
65 amp I think
Posted: Mon Jan 17, 2005 10:40 am
by ytt105
However, I've driven from Sydney to Canberra and then about 1000ks around the South Coast and all electrics OK. If I had any charging/load problems I think they would have shown up by now.
Posted: Mon Jan 17, 2005 12:46 pm
by TuffRR
Maggot4x4 wrote:I know I have this problem as mine is only 40amp and am looking at installing a second alt.
If anyone has any tips on wiring up a second alt it would be greatly appreaciated.
Wouldn't it be easier just to replace it with a better one, this way you dont need to worry about additional brackets and belts.
Posted: Mon Jan 17, 2005 4:22 pm
by Maggot4x4
TuffRR wrote:Maggot4x4 wrote:I know I have this problem as mine is only 40amp and am looking at installing a second alt.
If anyone has any tips on wiring up a second alt it would be greatly appreaciated.
Wouldn't it be easier just to replace it with a better one, this way you dont need to worry about additional brackets and belts.
Not really, being diesel, they are very $$$ and the highest I have seen is about 80Amp, where as I have the room and a 120 Amp alt sitting here.
Posted: Mon Jan 17, 2005 5:07 pm
by HSV Rangie
fit both nothing like having redundent systems.
Michael.
Posted: Mon Jan 17, 2005 7:41 pm
by Bush65
Sounds like it could be a diode problem in the alternator.
With my earlier model rangies, there is a heavy gauge wire with brown insulation that comes from the battery terminal on the alternator. It runs across to the motor then goes to the back of the motor (above the inlet manifold on left side). Then it crosses to the right side behind the block and finally connects to the positive post on the starter solenoid.
This is a roundabout way to get charge to battery and I have had problem with this wire and it's terminals.