When I was young I always played with a electronic race circuit! This brought me the idea to make your own circuit. You can make a lot of varieties with them and it is kinda looks like a Tech style also.

I also included 14 circuits with a different pattern! So, you can cut of a part you like and make your own grunge circuit . If I had to make for each every pattern several circuit brushes, the brush file would be to big!!!!!!

Just use your imagination.