Track Car electrical fault.

[Tomo3292]

I have been building this track / potential rally car for a few months now and have been suffering from an electrical fault.

basically ive replaced the full car loom uch ecu and key / barrel lock.
connected everything up, all earth's I believe are good, and battery has been replaced.
upon trying to turn the car over i hear a clicking from the left hand side interior of the car, immobiliser light goes out starter seems like its spining and engaging but doesn't fire up.
I do however here a buzzing noise from the throttle body and upon closer inspection see the throttle body flapping a bit.
so changed the throttle body exactly the same thing.
gone to the fuses / relays and noticed a bit of clicking there so removed the relay and noticed the throttle body stops whining.
tried a different relay same effect.
so next port of call was the fuse and i started to wiggle a few wires noise stopped. take my hand off noise starts again. so i removed the blue 15amp fuse and noticed the blades seem to move quite a bit.
this coupled with a rusted up relay is sending me in circles. Ordered a few new parts so hopefully this sorts it out. just wondered if anyone else has the same problem??

 

[Pauleds]

when you say the starter is spinning, is it actually turning the engine over?

 

[Tomo3292]

when you say the starter is spinning, is it actually turning the engine over?

I can hear trying to spin but then cuts out like its a flat battery or something

 

[Pauleds]

Is the fuel pump priming?
Pull the line off the inlet and check for fuel, otherwise check the multi plug to the rear of the car that's in the passenger footwell as the fuel pump wiring goes from that to the fuel pump.

 

[Tomo3292]

Yes mate fuel pump is priming loud and clear. so cant be that.
its definitely a wiring or relay issue as i thought it maybe. so ordered some new relays.
other than that im stumped really