Snowmobile trailer wiring

I have a 2013 chevy Silverado and a late 90's/early 2000's R&R covered snowmobile trailer. The trailer has a 7-way harness/plug. On our previous vehicle the 7-way plug was virtually next to the hitch receiver so plugging in was not an issue. Well now on my Silverado, Chevy has moved the plug up on to the bumper more, and I can no longer plug in the darn trailer. I probably need at least 6-8" more to be able to plug it in and be able to turn. I have looked around and cannot seem to find a simple connector with 7 way plugs on both ends. Just the 7 to 4. I did find an 8 foot cable for bigger trailers over the bed, and it turns the running lights on, but the brakes and turn signals do not work? I really don't want to re-wire the trailer. I am supposed to pick up a new snowmobile this weekend and it will be tough without my trailer! Anyone have this problem, any ideas, recommendations. I know next to nothing about electrical/wiring.



Thanks

Snowmobile trailer wiring