Hello Retrofuturist,
This might be of assistance:
From Understanding the Law of Kamma in Good, Evil and Beyond - Kamma in the Buddha's Teaching by P. A. Payutto
Translated by Bruce Evans
Kamma as conditioning factor Expanding our perspective, we find kamma as a component within the whole life process, being the agent which fashions the direction of life. This is kamma in its sense of "sankhara,"[b] as it appears in the Wheel of Dependent Origination[c],where it is described as "the agent which fashions the mind." This refers to the factors or qualities of the mind which, with intention at the lead, shape the mind into good, evil or neutral states, which in turn fashion the thought process and its effects through body and speech. In this context, kamma could be defined simply as volitional impulses. Even in this definition we still take intention as the essence, and that is why we sometimes see the word sankhara translated simply as intention.
http://www.buddhanet.net/cmdsg/kamma1.htm#Expanding with metta
Chris