This LRO reader emailed LRO.email@example.com to ask Steve Jones about charging issues with their Range Rover Classic's alternator.
I have a 1982 Range Rover Classic 3.5 V8. The alternator has failed and I have fitted a replacement (RTC 5087E), but despite transferring the two wires from the old alternator to it, I cannot get it to charge. The wires are a thick brown and a brown/yellow. The new alternator has three connections, which creates further confusion.
Can you help me get back on the road?
William Robert Richards, Stoke Aldermoor, Coventry
Your new alternator is correct for your V8 and should indeed have three connections. The large bolt is B+ and goes to the thick brown wire. The spade (or lucar) connector is for a suppressor capacitor, which you can take from your old alternator. The smaller bolt is for the brown/ yellow warning light wire. When fitted, check you have 12v at the B terminal and that the warning light comes on with the ignition, because without a functioning warning light it will not charge.
This workshop advice appeared in the November 2015 issue of LRO. Back issues are available to download on digital devices here.