Recommend (not required):
Dynamic Lighting System: https://www.gta5-mods.com/scripts/dynamic-lighting-system

!!! NOTE !!!
If your emergency light doesn't work or they're in the wrong place,this is because they conflict with other mod you install.
Use this mod https://www.gta5-mods.com/scripts/sirensetting-limit-adjuster

Installation:
1.put 'ssso' folder in "mods/update/x64/dlcpacks/"
2. open OpenIV, navigate to 'dlclist.xml' in "mods/update/update.rpf/common/data/". Add "<Item>dlcpacks:/ssso/</Item>"
3(optional):
- if you want an optional pattern, replace those .yft, and replace the 'carcols.meta' in "dlc.rpf/common/"
- select "Traffic Advisory" folder and choose one of your pattern's xml, put both of them in Plugins/DLS/ 

Spawn Name: 
polalamof
polbisonf
polbuffalof
polscoutf
polstanierf
poltrekf

Credits:
- Rockstar Games - original model
- Dani02 - Bison, Scout conversion
- Thundersmacker - GTA IV Bravado Bison
- GCT - Alamo and Scout model
- Tall70 - Landstalker model
- LamboFreak - BuffaloS new headlight, custom sounds
- TheF3nt0n - mapped BuffaloS, Stanier
- Voit Turyv - Buffalo AC model; dashcam; Buffalo custom sounds; BuffaloS wheels; emergency light assets, texture assets
- MrKote - improved Buffalo AC rear bumper model; Buffalo AC custom grille
- Jacobmaate -LEDs model and texture; Alamo boot model edit; dashcam; antennas
- 11john11 - BuffaloS rims; improved Landstalker; LASD style antennas; trunk equipment; improved interior console; traffic advisor
- DustyFlop - edited Stanier police model
- Vx5 Voltage - edited Scout police Model; Stanier steelie wheels; toughbook model; police console improvements
- Glennoconnel - Granger parts for trunk edits and taillight setup
- AllenKennedy - Scout rims
- IlayArye - edited Alamo police and Landroamer model; mapped Alamo, Scout and Landroamer; V lightbar basic model
- Monkeypolice188 - V liggtbar LODs and polishing; 
- w/ - update rotor models
- Bravo-One-Charlie - black Grille; edit buffalo model 
- Nachtfliege/Nacho - trunk organizer; spotlight; cage; Landroamer headlight textures
- Skitty -Wiwang Emergency Lighting System model
- AlexanderLB - BuffaloS and Landroamer badges, wiwang Emergency Lighting System texture
- actuallyTOXIC - Alamo: convert to PPV
- SAS994 - lore-style Federal Siginal Vision SL lightbar; map and edit Gresley, Bison; livery