According to the IPMD website, it's possible that there is no factory wiring for the chimes in some of the games sent to Germany. http://www.ipdb.org/machine.cgi?id=572

I'm not sure I could own an EM without the bells/chimes. Adds way to much to the game!

Check to see if there are some vacant female jones type connectors on the motor board. Does the game have a knocker?
Even so, it's always possible to retrofit bells or chimes into any game as long as you have the components.

This game does not have a chime box ever. Instead it uses bells in the back box. The Jones plug is probably there for it but you will have to actually buy the 10/100 point bell ( pinball Resource). Then there’s another bell that mounts on the match unit. Again you can buy a blank black bell with no coil, just the bell itself, from pinball resource

It is common for games that were brought back from Germany to have No bells. You will see the punchings in the side of the cabinet backbox wall where the bell was originally to be mounted. But if you look closely you’ll see that there’s never been a Screw in the hole. I don’t think any Bally games exported to Germany had bells

I recently installed chimes in a Bally Wizard that also was a European game that had none. The socket was there but actually had the knocker plugged in by mistake. After finding the correct socket for that, I used a chime unit from a Williams. The ground wire on the plug had to be switched, but everything worked fine even with the Williams coils.

This can be heard very often, and the definitive reason is that german distributors did NOT WANT the games to be shipped with bells, to save money because nobody used them over here. In the 60ies there weren't many arcades in germany, 90 percent of the games were located in typical 'german beer-bars' and no one needed bells. The manufacturers were happy with this, they saved money.

Putting a Williams chime box in a Bally is, Ummm, crazy. They sound completely different. Williams boxes are the worst sounding of the three major manufacturers. Only Chicago coin sounds worse.

i owned a few 1970's gottlieb pins that were imported back into australia from the netherlands which had no chimes, no wiring etc. was strange playing them without it.

they were big indian, hot shot and jungle queen.