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[TheBoy]

was thinking of somthing els at time,
would check battery, put meter on batttery and see if any volts are added when engine is running should be 12-13volts make sure that there is nothing on i.e radio e.t.c,, then check it the same way with every thing on there should be no change in volts at battery, if there is then it could be the batery or the volt regulator being faulty.

With the engine running you need to see 13.5 - 14.5 volts as per the maintenance guide. Any less and the battery will not charge at all.

Kevin

constant charge of 14.5volts will blow the battery, or lights or radio. Battery spec's no more than 13.5 volts, says it on all my batterys bar for my lorry battery as that is 24v charge at 25.5volts.

Nope 14.5v is the correct (maximum) charging voltage on the Omega (and virtually every other 12v car out there)

[KillerWatt]

constant charge of 14.5volts will blow the battery, or lights or radio.

The charging voltage for any 12V system is anywhere between 13.8V (minimum) and 14.4V (maximum).