When I bought my SS/FE, among other numerous issues that I wasn't informed of was 4 individual bullet connectors replacing the original 4 pole connector for the fuel tank wires. Someone must have crushed or broken the original plug. Well, I found the exact replacement. The male end fits perfectly into the female end on the new fuel level sender unit that I had to buy (I wasn't told the old one didn't work either. Caveat Emptor

!). Here's the link:
AMP superseal 4 pole connector set - Touratech-USA