battery and alternator are good, wont charge

[pnwbimmer]

(e30 m20) alternator and battery tested out fine, belt has tension, cant get the battery to charge. the battery light doesnt come on when i first start the car but i read that that was only a problem with early models(?) and mines a 90. pleeeasssseee heellllpppp.

[tomstin]

From the wiring diagram for a 85. See the note in the bottom right corner. You will need to find a wiring diagram for your year.

[Jaxx_]

In later clusters there is a resistor in parallel with the charge light bulb in the cluster. Check that C1 14 and C1 16 have a connection

[r-mm]

Need basics. Voltage at battery running voltage at alternator running.


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[325e '87]

In later clusters there is a resistor in parallel with the charge light bulb in the cluster. Check that C1 14 and C1 16 have a connection

Yeah, wasn’t the problem that the early year models would fail to charge the battery if the bulb in the dash cluster burned out? Kind of funny that a bad light bulb can brick your car.