Quoted from DrDude:100 points switch will activate relay V “Beginning Ball” while hitting a 1000 points switch will not activate this relay. Any idea what could be the problem?
If the 1000 Point relay (M) doesn't activate the Beginning Ball relay (V), Inspect and diagnose this circuit with Alligator clip jumper wires
http://www.planetimming.com/Pinball/troubleshooting/EM%20Troubleshooting.pdf
http://www.pinrepair.com/em/index3.htm#features