wiring an e pipe

[V_Joe1981]

Hi all, wanting to make an e pipe(mechanical ) and need some help with the positive connection on the bottom . Any thoughts?
An old YouTube video showed a fork/spade terminal?

 

[SupplyDaddy]

I wouldn't think you would have room for a terminal connection.

A little background on your design would help.

 

[V_Joe1981]

Trying to make an 18350 epipe mod style pipe, but not sure on what positive connection they use