Looking for a wiring diagram for a Ultra motor A2B Velociti. Have one for a A2B Metro but it's not the same. Any help??

for the motor or controller?

what specifically are you looking for? Motor is usually the hall wires and the phase current wires...

may have to replace the 36 volt battery with a non A2B battery and wondering how to wire a new one in. Norm

Just a battery? to wire up a battery, I just hook up the positive and negative leads. usually that is kind of obvious. Got any pictures?

That is a problem with OEM e-bikes. Batteries are expensive, and someday they have to be replaced..

You are right right chas58. A2B bike batteries are a specific size.
Please keep us updated so others can benefit from this .
Besides mounting the battery , just keep the B+/B- marked or labeled so you dont spark the controller battery wires if you find a replacement battery