Hi. I am charging up my battery for my Harley and am using an oxford oximiser 600, but have lost the instructions. I would like to know what the two lights are to either side of the four lights. They appear to have a + and - symbol by them - one is glowing green but the other is not lit.

You have the four coloured lights to show battery state Red - irrecoverable; Orange - 3 to 6 Volts in the battery, Oximiser will attempt recovery; Yellow - 6 to 12 Volts in the battery, Oximiser will charge and and optimise and Green - Full charge, about 14 V, the Oximiser will maintain the charge.

On the left of this you have a Green light to show that the Oximiser is connected to the mains and on the right you have a Red light to show that you have connected the charging leads thewrong way around, i.e. the positive charging lead is on the negative terminal and the negative charging lead is on the positive terminal. This light should be off.

I went to the Oxford site and only found instructions for the Oximiser 900 but did find this at another site.

Simple 4 stage indicator lighting
Red light = battery irrecoverable
Orange light = battery in critical condition Oximiser will try to recover
Yellow light = battery low Oximiser will recharge and optimise
Green light = battery charged and ready to go

I hope this helps.

Good luck
Steve