HI,
On my +4 1991 Rover M16 engine my battery warning light is often on ( not bright but a weak yellow light) and then the read out voltage is about 10Volt or lower.
I checked the very thin (brown) wiring coming from alternator and goes behind the starter, behind the starter there is a connection.
checked all connections and these will be OK,
sometimes after starting the engine there is no problem (no yellow warning light and the read out voltage on the Voltmeter is above 13V.
So this is a intermittend fault.
Can someone help ( it it a fault in the Voltmeter or is it a fault in the ECU) ?
best regards,
Bart