* The owner's manual: The owner's manual for your vehicle should include a wiring diagram.
* The repair manual: A repair manual for your vehicle will also include a wiring diagram.
* Online: You can also find wiring diagrams for your vehicle online. A few websites that offer wiring diagrams include:
* [AutoZone](https://www.autozone.com/diy/wiring-diagrams)
* [AllData DIY](https://www.alldatadiy.com/wiring-diagrams)
* [Mitchell 1 DIY](https://www.mitchell1.com/diy-auto-repair-software/)
When looking for a wiring diagram, be sure to specify the year, make, and model of your vehicle. This will help you ensure that you get the correct diagram.
Here are some additional tips for finding the wiring diagram for your 1976 Lincoln Mark IV:
* If you are unable to find the wiring diagram in your owner's manual or repair manual, you may want to contact a local dealership. They may be able to provide you with a copy of the diagram.
* If you are looking for a wiring diagram online, be sure to use a reputable website. Some websites may provide inaccurate or incomplete information.
* Once you have found the wiring diagram, be sure to read it carefully. It is important to understand the diagram before you begin working on your vehicle.
