Adding turning indicators to vehicles.

Not sure how many people know of this (I'm sure I can't be the first). It's pretty easy. It's basically 2 files that shake hands with each other. As always, make backups/copies of any files prior in case a typo or missing bracket, you can always rollback and start over.

TL;DR, check out these resources and figure it out yourself.

https://forums.gta5-mods.com/topic/37739/find-the-hash-code-for-a-specific-wav-sound-file-in-sounds-dat54-rel-and-game-dat151-rel

CREATE A BACKUP DUMP FOLDER ON YOUR PC FOR COPIES OF ORIGINAL FILES IN CASE SOMETHING MESSES UP.

STEP 1.

1. Open OpenIV.
2. Click the Edit mode button.
3. Go to mods/update/update.rpf/common/data/levels/gta5/
4. The file you're looking for is vehicles.meta.
   >>>> BACK UP YOUR FILES! <<<<
5. Create a backup/dump folder on your PC.
6. drag and drop vehicles.meta in to it. This is your rollback failsafe.
7. Right-click vehicles.meta and select Edit.
8. Find (use search) the vehicle(s) you're wanting to add a turn indicator sound to (eg. POLICE, FBI, SHERIFF2, etc.)
9. Look for this: 

   <audioNameHash/>

10. Change it to:

    <audioNameHash>stanier</audioNameHash>

    Change stanier to whatever vehicle you want your sounds to come from. Default is basically null, so you're gonna want to change it especially if your vehicles are quiet or don't sound right. That essentially ties the default engine and vehicles sounds from that vehicle to your custom one. Resources above are super helpful on deciding what vehicles should go where.
11. Save and load up RPH to make sure your vehicles have the proper sounds. Blinkers won't work for cars YET!
12. Exit out of GTAV.

STEP 2.

1. Open Codewalker.
2. Click <<
3. Select Tools..., then RPF Explorer...
   Wait for it to load it in.
4. Click the Edit mode button.
5. Go to mods/update/update.rpf/x64/audio/config
6. The file you're looking for is game.dat151.rel.
   >>>> BACK UP YOUR FILES! <<<<
7. Back at the dump folder you created earlier (on your PC), drag and drop game.dat151.rel in to it. This is your rollback failsafe.
8. Back in Codwalker, right-click game.dat151.rel and select Export XML...
9. Put that same file in your dump folder on your PC. It should have an XML at the end.
10. Open it in a text editor on your PC. I personally use Notepad++.
11. Hit Ctrl+F to bring up the find/search, type in Bison or any truck name. Indicators sound for trucks and vans.
12. You're going to look for this:

     <IndicatorOn>hash_D4314DE2</IndicatorOn>
     <IndicatorOff>hash_A683DC21</IndicatorOff>

    I don't think those hash names change at all. Basically, you're going to copy/paste those to the vehicles we added the audio hash to earlier.
13. This is what you'll replace for those vehicles: 

     <IndicatorOn>null_sound</IndicatorOn>
     <IndicatorOff>null_sound</IndicatorOff>

14. Save your changes.
15. Go back to Codewalker, right-click below the files in the config directory and select Import XML.
16. Select your edited XML file from your PC and hit Open. It should convert it back to a REL file and overwrite what was there.
17. Close out of Codewalker and run RPH again to test GTAV.

These are the lines of code that add turn indicators to your vehicles. If you have DLC List vehicles, look inside their DLC.rpf (might be under common/data) and you should see their vehicles.meta.

I am very tired, so I apologize if there's any issues with this. I tried to be as thorough as possible. Please hit me up if I need to change anything. It looks more difficult than it actually is. If you're versed in OpenIV and Codewalker, it's a pretty straight shot for these files. I also recommend checking out the 3 resource links I added at the top. They were invaluable to figuring this out. They might do a better job at explaining the smaller details.

If this was already shown somewhere, than I apologize again. I was having difficulty finding it myself.