I have 2 plugs coming off of ESC and running 2 batteries. I want to run 1 6s battery,

[3Jjb4Skoot]

I have 2 leads coming off of ESC and running 2 batteries. I want to run one 6s battery, is the plug to transfer the power thru the unused plug
called a Bind Plug Loop Connector ?

[jkflow]

Yes,
very common nowadays on RC cars.

Example:

https://www.horizonhobby.com/product/firma-150a-brushless-smart-esc-3s-6s/SPMXSE1150.html

[tbonemcniel]

If the two existing plugs are wired in series, which is likely and stock for a Sonicwake, then you need a simple connector that loops back on itself to plug into the unused plug.

If the two existing plugs are wired in parallel, then you don't need to do anything but maybe cap the unused plug for safety purposes.

[TRUCKPULL]

Pictures please.

Will help a lot, are you asking about the radio plugs on the ESC, or the power plugs?

Larry

[3Jjb4Skoot]

So must be wired in series, I found a loop plug on the bay and all worked well.IMG_0506.jpg