On the GI or 6.3 volt AC side of the schematic there is one switch on the H/Tilt Hold relay that needs to close to get power to the playfield lights:
Bronco Playfield lights (resized).jpg
That switch connects the white-black wire to the white-red wire (not shown). You could also have a bad 10 amp GI fuse or fuse holder.
On the coil or 25 volt AC side there are a few switches that all need to close to get power to most of the playfield solenoids:
Bronco power rail (resized).jpg
Coincidentally, a H/Tilt Hold relay switch is in this circuit too. I'd start by checking that the H/Tilt Hold relay and its switches are working. Then trace the circuit up the right side to see where you're losing power.
Kick out holes work all the time to let the ball drain in case you tilt the game or shut off the power and turn it back on while the ball is in a saucer.
/Mark