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cosworth fuel pump wiring

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Old Apr 18, 2007 | 12:20 PM
  #1  
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johncoles
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From: wales
Default cosworth fuel pump wiring

Need some info on how to wire a new live to the pump? It is running a pectel engine loom at the moment . Many thanks
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Old Apr 18, 2007 | 05:41 PM
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johncoles
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From: wales
Default wiring

I think its the red and black wire i need to change ? Please any help !
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Old Apr 19, 2007 | 12:51 AM
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From: Nottingham
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Take the original black/red wire off the pump and use this to switch a new relay mounted in the boot (relay pin 85). Run a new wire from the relay (pin 86) to earth. Run a new fused wire (fuse and wire rated at 30A) to the new relay pin 30. From pin 87 run a new 30A-rated wire to the pump, and a new wire from the pump to earth.

When complete, check that you've got over 12V at the pump.
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Old Apr 20, 2007 | 05:09 PM
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philram
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From: North Wales
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Originally Posted by jon@work
Take the original black/red wire off the pump and use this to switch a new relay mounted in the boot (relay pin 85). Run a new wire from the relay (pin 86) to earth. Run a new fused wire (fuse and wire rated at 30A) to the new relay pin 30. From pin 87 run a new 30A-rated wire to the pump, and a new wire from the pump to earth.

When complete, check that you've got over 12V at the pump.
was about to ask for an idiots guide to wiring a pump...
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