Originally Posted by shockercbh
When I test the alternator with key in on position.Terminal D+ has no voltage.B+ has 12 volts.Anyone have any ideas what it could be?
With the ignition key on, is the charge warning light on? Meaning lit.....
In the Bentley it says Terminal B+ is supplied battery voltage from the battery directly. Terminal D+ is supplied battery voltage via the charge warning light when the key is on or the car running.
On page 121-4 Charging system checking
#1 Turn ignition key on. Check that the charge warning lamp comes on NOTE-
If the warning light does not come on, repair any wiring or bulb faults before continuing to check the charging system!
Maybe the bulb is out which completes the circuit to D+........if not, recheck your wiring......