Complex sentence: Then the table would descend and the respot cells would close around the standing pins, the cells that had pins in them would complete an electrical circuit which would send the scoring information to the display and also would light one of ten "pindicator" lights.
Split into simpler sentences: Then the table would descend and the respot cells would close around the standing pins. The cells that had pins in them would complete an electrical circuit which would send the scoring information to the display, and also would light one of ten "pindicator" lights.