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

1-Definition
2-Base
3-Skins
4-My skin

Click 2 more And then you will find 

4-Myskin
3-Skins
2-Base
1-Definition

that mod was activated successfully
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Mod Bus Irizar i6 By DBMX

you Need to Download Bus Irizar i6 

digitalbusmx.com/DBMX/2019/04/22/irizar-i6-basico-gratis/
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Version Game :
1.33.X
1.38.X 
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Website : 
https://mohskinnerworkshop.blogspot.com/
Facebook : 
https://www.facebook.com/Mohskinnerworkshop
Youtube :
https://www.youtube.com/channel/UCUOk5y5ZRYgWBW8lTO1kHLw
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Software :

ETS2 STUDIO
Photoshop cc 2019
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Credits:
MohSkinner