KORG Poly 61 Battery Replacement

Hello,

I was wondering how to install the Poly-61 battery kit (Item #4447):

I saw a previous thread about this here but it wasn’t entirely clear: (Korg Poly-61 Battery Replacement kit #4447)

Is there a basic set of instructions showing how to install the Poly-61 Battery and diode? Does the diode simply go in series with the battery, with the same polarity? If so, is it to be inserted on the negative or positive side of the battery? Lastly, should resistor R70 be removed or left in?

Thanks in advance!