tanks inc fuel sender wiring

[paulk68]

I am looking to add a weather pack connector much like this picture but I feel like this looks a little too short. would you guys suggest adding some 14 guage wire? if so what is the best way to extend this. butt connectors? I have seen some that self solder with a heat gun. Any info would be great.
Thanks

[paulk68]

was thinking of using something like this to extend the two wires.
https://www.amazon.com/haisstronica-Connectors-Electrical-Removable-Storage/dp/B07RX6QYX5?th=1

[blitzer454]

If you can still get to the wires easily then I would use solder and heat shrink over butt connectors.