1. Check the vehicle owner's manual. Some vehicles include a wiring diagram in the owner's manual. If you still have the owner's manual for your Sundance, check the index to see if there is a section on the wiring diagram.
2. Download a wiring diagram from the internet. There are several websites that offer free or paid wiring diagrams for download. Some popular sites include:
* [AutoZone](https://www.autozone.com/diy/wiring-diagrams)
* [CarParts.com](https://www.carparts.com/b/electrical-wiring-diagrams?N=4294958323+4294899521)
* [Mitchell1 DIY](https://diy.mitchell1.com/home)
3. Purchase a wiring diagram from a parts store or auto repair shop. Most auto parts stores and auto repair shops sell wiring diagrams for a variety of vehicles. You can usually purchase a wiring diagram for your Sundance by providing the year, make, and model of the vehicle.
4. Obtain a wiring diagram from the Chrysler Corporation. If you are unable to find a wiring diagram from any of the above sources, you can contact the Chrysler Corporation and request one. You will need to provide the VIN number of your vehicle when requesting a wiring diagram.
5. Use a wiring diagram from a different year or model of vehicle. If you are unable to find a wiring diagram specifically for a 1993 Plymouth Sundance, you may be able to use a wiring diagram from a different year or model of Chrysler vehicle. However, be aware that the wiring may be different between different years and models of vehicles, so you will need to make sure that the wiring diagram you are using is compatible with your vehicle.