How to add Mod : 
Documents\Euro Truck Simulator 2\Mod
Documents\American Truck Simulator\Mod
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Install mod in Mod Manger :

Install My Pack in Mod Manger
Install :
1-My skin
2-Mod Car
Game :
1-Mod Car
2-My skin

Click 2 more And then you will find 
that mod was activated successfully
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Mod Renault 12 By trzpro
you Need to Download Renault 12
https://mods.emirbardakci.com/downloads/cars/toros/
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Version Game :
1.37.X
1.38.X 
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Website : 
https://mohskinnerwp.blogspot.com/
Facebook : 
https://www.facebook.com/Mohskinner
Youtube :
https://www.youtube.com/channel/UCUOk5y5ZRYgWBW8lTO1kHLw
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Software :

ETS2 STUDIO
Photoshop cc 2015
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Credits:
MohSkinner