Thank you for reading my post.

I have this 4 digits 13 segment display which I wanted to use it as a count down but I can't find any information about how to wire it and use it.

Thanks in advance and your time.

 

If it is an LED display, take a 5-9VDC supply, a 1kΩ series resistor and start probing every pair of contact in both directions.

Eventually, you will find:

1) The common pin for each of the four digits
2) Whether it is common anode or common cathode
3) The connection for each segment and d.pt.

 

Here is the datasheet for LITEON LTP-3784G which is similar except that it is two digits and has 18 pins.

https://media.digikey.com/pdf/Data Sheets/Lite-On PDFs/LTP-3784G.pdf

 

I can help a little and point you in the right direction. The manufacturer is LiteOn. They make a lot of LED products. I couldn’t find this in an active list. You might want to contact them directly for a datasheet. Basically it’s similar to below diagram you need to first determine whether it’s common anode or common cathode. Btw you have a 16 segment display. 14 plus clock points.