Cosworth fuel pump re-wire braided looms
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PassionFord Post Whore!!
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Can anyone put a diagram up of how these wire up please?
(supposed to run through an existing relay or something)
I've heard they can be a nightmare to do and it's putting me off buying one.
Thanks
(supposed to run through an existing relay or something)
I've heard they can be a nightmare to do and it's putting me off buying one.
Thanks
Thread Starter
PassionFord Post Whore!!
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From: Tyne and Wear
From memory,
Live terminal from the battery (fused on the loom), then the relay on the loom will be in the boot, and you cut the original feed, crimp it, and put that onto the relay. Make a new earth and all done?
So the original feed to the pump switches the relay and gives power to the pump using the new direct feed from the battery
Live terminal from the battery (fused on the loom), then the relay on the loom will be in the boot, and you cut the original feed, crimp it, and put that onto the relay. Make a new earth and all done?
So the original feed to the pump switches the relay and gives power to the pump using the new direct feed from the battery
Last edited by JamesH; Mar 8, 2011 at 11:10 AM.
Thread Starter
PassionFord Post Whore!!
iTrader: (4)
Joined: Aug 2007
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From: Tyne and Wear
From memory,
Live terminal from the battery (fused on the loom), then the relay on the loom will be in the boot, and you cut the original feed, crimp it, and put that onto the relay. Make a new earth and all done?
So the original feed to the pump switches the relay and gives power to the pump using the new direct feed from the battery
Live terminal from the battery (fused on the loom), then the relay on the loom will be in the boot, and you cut the original feed, crimp it, and put that onto the relay. Make a new earth and all done?
So the original feed to the pump switches the relay and gives power to the pump using the new direct feed from the battery
does'nt sound to hard then
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Phil
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Buy a new 40amp relay. The relay will have terminals 85, 86, 30 and 87. you may be left with one terminal (87a) don't panic you don't need it
blue/white from ecu(pin28 i think from memory) - pin 85
ignition feed - pin 86
Fused supply straight from battery - pin 30
fuel pump + terminal- pin 87
the old ford black/red will also need to be connected to pin 87 as this also powers the iscv etc. make sure you isolate it boot end to prevent short circuit.
i used a Durite 40/70 amp relay part No. 0-728-70
hope this helps,
Phil
blue/white from ecu(pin28 i think from memory) - pin 85
ignition feed - pin 86
Fused supply straight from battery - pin 30
fuel pump + terminal- pin 87
the old ford black/red will also need to be connected to pin 87 as this also powers the iscv etc. make sure you isolate it boot end to prevent short circuit.
i used a Durite 40/70 amp relay part No. 0-728-70
hope this helps,
Phil
Thread Starter
PassionFord Post Whore!!
iTrader: (4)
Joined: Aug 2007
Posts: 4,136
Likes: 60
From: Tyne and Wear
Buy a new 40amp relay. The relay will have terminals 85, 86, 30 and 87. you may be left with one terminal (87a) don't panic you don't need it
blue/white from ecu(pin28 i think from memory) - pin 85
ignition feed - pin 86
Fused supply straight from battery - pin 30
fuel pump + terminal- pin 87
the old ford black/red will also need to be connected to pin 87 as this also powers the iscv etc. make sure you isolate it boot end to prevent short circuit.
i used a Durite 40/70 amp relay part No. 0-728-70
hope this helps,
Phil
blue/white from ecu(pin28 i think from memory) - pin 85
ignition feed - pin 86
Fused supply straight from battery - pin 30
fuel pump + terminal- pin 87
the old ford black/red will also need to be connected to pin 87 as this also powers the iscv etc. make sure you isolate it boot end to prevent short circuit.
i used a Durite 40/70 amp relay part No. 0-728-70
hope this helps,
Phil

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Much neater too





