Fuel pump question

[OneGoat]

Has anyone re wired a fuel pump for a D1 V8? And if so what voltage does it require?
I had some earthing issues a while back and rewired the earth, even replaced the pump before I found the issue.
Yesterday the pump stopped again.

I checked the earth and no problem there but the positive wire when turning the ignition on only showed 3.6 volts and the main positive that comes in on startup showed 3.5 volts. The pump did not kick in.

Then I put a temporary 12 volt feed to the pump and it ran perfectly but I'm unsure if it's meant to have a 12 volt feed or not.
The pump is 3 months old and I have cleaned it.

I'm considering re wiring the pump as it's a pain in the butt ripping everything out to get to it.

Any thoughts would be appreciated.:)

Ben

[bee utey]

There are plenty of inline connections to melt and prevent a full 12V to the pump. The easiest one to get to is above the rear muffler. Cut the connector out, solder and heat shrink the connections. Check the connector to the pump housing too, blackened terminals are a sign of overloading from a crook pump. Also check the fuel pump fuse and relay for blackened/melted terminals.

[OneGoat]

Thanks. The fuse is good and no signs of overloading. The connections are good at the pump too. So I'll get under it tomorrow and check the wiring underneath and the relay.
Cheers
Ben