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COLVERT · 9th January 2020, 17:27

1/ What's the voltage at the battery terminals with the negative lead disconnected ?---( 12.6 volts+ )

2/ What is the voltage at the battery terminals with the engine ticking over ??---( 14.4 volts or close. )

3/ If a diode is failing and is leaking current to earth it will be detectable especially if the battery drains in two days.

4/ Does the regulator for the dash lights work ??

9th January 2020, 17:27	#2
COLVERT This is my second home R75 Saloon. Join Date: Feb 2009 Location: France/or Devon. Posts: 14,003 Thanks: 3,851 Thanked 2,167 Times in 1,816 Posts	1/ What's the voltage at the battery terminals with the negative lead disconnected ?---( 12.6 volts+ ) 2/ What is the voltage at the battery terminals with the engine ticking over ??---( 14.4 volts or close. ) 3/ If a diode is failing and is leaking current to earth it will be detectable especially if the battery drains in two days. 4/ Does the regulator for the dash lights work ??