The manual on IPDB.org describes the startup sequence. The next step is that the Credit relay should fire the Coin relay through this path:
Captain Fantastic Coin relay (resized).jpg
/Mark

Good progress so far.

Don't overlook the switches on the Reset and Game Over relays in the Outhole relay coil path. They're between the black power rail wire and the 15/red-white wire on the Outhole relay coil lug.

Continuity isn't what you want to measure here. Unless you can measure an ohm or less of resistance across a switch when it's closed the switch isn't working well. If you measure just continuity it's possible that your meter is describing another path between the probes: through the transformer, relay coil, fuse, etc. That path can have a resistance of ~15-50 ohms which some meters will report as continuity. There are many topics in this forum that elaborate on this.

Bally often did this. Williams did too. It represents a connection not actually drawn on the schematic. Here's the complete circuit for the Outhole relay, in 3 (!) pieces:
Captain Fantastic Outhole relay (resized).jpg
Essentially the Outhole switch starts a bonus countdown. Once the bonus reaches zero the Outhole relay fires and returns the ball to the shooter lane.

Since you're studying up on EM games you might want to spend some time with "An Introduction to Bally Flipper Games" which covers the basics of the games and their devices and some schematic information. Williams and Gottlieb had similar publications. Two of the three are available on my web site at https://www.funwithpinball.com/resources/parts-catalog-list