https://evcigarettes.com/vertex-rda-clone-by-ehpro/

https://www.amazon.com/Ximimark-Profile-Spring-Connector-Mechanical/dp/B07B9T92GV/ref=mp_s_a_1_3?dchild=1&keywords=510+connectors&sr=8-3

https://imgur.com/a/lkI2jlH

Used lamp cord from amazon - https://www.amazon.com/gp/aw/d/B07K2FSPPL?psc=1&ref=ppx_pop_mob_b_asin_title

510 female adapter from amazon - https://www.amazon.com/gp/aw/d/B07B9T92GV?psc=1&ref=ppx_pop_mob_b_asin_title

RDA from vaporider - https://vaporider.deals/products/n22-rda-clone-2?_pos=2&_sid=c35c9095b&_ss=r&variant=29233658696

literally, strip, screw, crimp, shrink tubing, done.

i do need a better end but it works. Resistance change of only .021