Create your own heavy duty parallel adapter with this pre-soldered parallel harness - there is approximately 5CM 12awg silicone wire on either side of the middle joint.
All you have to do is solder on 2 male and 1 female connector of your choice and you're good to go.
In my experience custom fabricating parallel harnesses, the mid-joint is the hardest to get right so save yourself the frustration!
