Sorry, forgot to say this is with the engine off but ignition on.
I thought with the ignition on but the engine not running the pump would prime the system but not keep running?
This is what happened with my bike when the fuel in the main tank ran dropped below the pickup pipe , the pump would keep running (ignition on, engine off) as there was no fuel to pressurise the system.
I understand this is a different system though. I haven't much experience with the car side of things so you will have to excuse my lack of knowledge!!
The truck was an unfinished project so nothing was wired or plumbed when I got it.
Just did a search on google and a site said the pump should be wired to the fuel pressure switch. - http://www.how-to-build-hotrods.com/electric-fuel-pump.html
"The easiest way is to use an oil pressure switch. The switch will stop the pump whenever the oil pressure in the engine goes away. So, whenever the engine is off, the pump will turn off automatically.
Some switches just do that. But how do I get the pump to run when I'm trying to start the motor and the oil pressure's not up yet?
You use a three prong switch like this Standard Ignition PS-64. The switch will also let the pump run when you hit the starter because the engine doesn't have oil pressure yet."
Is this correct?
If so, I just bought a new switch for it 3 weeks ago as I broke the terminal off by mistake when I was working on the radiator but it was a single terminal switch I got as that is what was fitted before.
Would I need a 3 terminal switch to wire up the fuel pump? - http://www.rimmerbros.co.uk/Item--i-GPS123