I take it you are missing the owner's manual? If you have one, look at pg 60 in it.
From the 1975 Chrysler owners manual pg 60:
Fuse 3- 20 Amp:
Time delay for Ignition Switch,
Light and Wiper, Headlight title lights,
Hazard Flasher,
Stop lights,
Trunk Light,
Glove Box light,
Key in and...