Add it to your server
In your server's .ini file (servertest.ini by default), add these to the existing WorkshopItems= and Mods= lines, separated by a semicolon (;).
WorkshopItems=3741902515;3828051669
Mods=JumperCables;JumperCablesMPFix
These lines include the mod it requires, as its Steam page declares it:
- Jumper Cables [B42] ·
JumperCables
| Workshop item | Subscribers | Declared in |
|---|---|---|
| Jumper Cables - Multiplayer Fix3828051669 | 2 | description footer |