I am building a fuel tank that the pump has got to go inside. The problem i have got is to get the electrical wires though the body of tank.
I need the correct bulk head fitting, but not sure what it looks like. I have tried several places but no good. Any ideas welcomed

Hi,
I'm using the bulkhead fitting from ATL. It is very good, and fully designed for the purpose. I think the kit includes the male and female connectors, but the part you need is the bulkhead fitting at the bottom of the picture.

Screwing the black caps in crushes the inner white rubber cable by pass to achieve sealing.

http://www.atlltd.com/2-pin-clubman-electrical-connector-set.html

Hope this will help

Have you looked at car buildersolutions? They do an in tank pump with all fittings.

http://www.carbuildersolutions.com/uk/in-tank-fuel-pump-45psi

[Edited on 3/3/17 by Schrodinger]