Fuel pump problem?

Both pumps have been replaced and produced fuel at the metering unit previously 3 weeks ago. Now got no fuel at the metering unit. By disconnecting the various joints in the fuel pipes it turns out that the in tank pump runs ok (1 second burst when ignition first switched on) but the HP pump doesn't run. Ignition pulses seem to be there as the Rev counter kicks when cranking the engine. Any thoughts?…….

Following some helpful suggestions (bridging out the relay etc) on here I connected the HP pump direct to the battery - it runs fine. I then intercepted the pump feed wires in the passenger side floor and cut them. Feeding the pump side of the 2 cut wire ends from the battery using fly leads - no pump. In conclusion, I think there must be a bad connection in one of the 2 cables to the pump. Tomorrow I'll run a new pair of wires to the pump. For reference there are 2 pairs of wires for the 2 fuel pumps - a red/yellow and a brown for the in tank pump and a thicker pair of the same 2 colour codes for the HP pump. Watch this space….

Further testing has revealed that the pump itself is intermittent! Sometimes when connected directly to 12Volts it runs (very noisily) but most times it's dead. This will teach me to buy cheap stuff on EBay!
 

The first thing I would check is that you have power to the pump. Not familiar with the wiring on these cars as mine is an early model with only the external pump but it sounds as though you have no power to the external pump or the pump itself is faulty.

Jumper out the Fuel pump relay and see if it turns on with the ignition.  

Fuel pumps do go bad, but fuel pump relays are iffier.
You can either use a couple of spad crimp connectors and a hunk of wire or you can use the Horn Relay as a test.

Check to see if the non return valve is stuck ? I've got a problem with my pump at mo , it runs and sounds great but doesn't pump fuel ! So for me it probably new pump !? Have you tried to bench test it off the car ?