Fuel pump wiring
31-08-2006, 10:30 AM
#1
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Fuel pump wiring
HELP
I've heard all the horror stories about melted engines due to the fuel pump wiring connections failing..........
So while i have the tank out, this will be one of the mods i'll be doing.
Now knowing how bad i am with wiring, i'm not keen at modding it all Damo has. IE running direct from Battery etc etc (unless someone can explain in the queens ENGLISH for me!
).
I take it these are the connector that would need replacing!...
So idea's please ladies & gents!
I've heard all the horror stories about melted engines due to the fuel pump wiring connections failing..........
So while i have the tank out, this will be one of the mods i'll be doing.
Now knowing how bad i am with wiring, i'm not keen at modding it all Damo has. IE running direct from Battery etc etc (unless someone can explain in the queens ENGLISH for me!
).I take it these are the connector that would need replacing!...
So idea's please ladies & gents!
31-08-2006, 10:56 AM
#2
Too many posts.. I need a life!!
Do not run it direct from the battery!!!! Just check and clean he connectors. If you do want to replace/uprate the wiring do it as a a one for one swap, do not modifiy it.
31-08-2006, 12:39 PM
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31-08-2006, 01:43 PM
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i ran one direct from the battery with a new relay jase quite easy damo's thread tells you everything you need to know 
quite easy damo's thread tells you everything you need to know
31-08-2006, 01:46 PM
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Originally Posted by adamski frst
i ran one direct from the battery with a new relay jase quite easy damo's thread tells you everything you need to know
quite easy damo's thread tells you everything you need to know 
Ps yes that bad................
I'd do everything on that car, and i mean EVERYTHING. But i'm shit scared of wiring!
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31-08-2006, 01:52 PM
#8
Advanced PassionFord User
Originally Posted by Franco
Originally Posted by adamski frst
i ran one direct from the battery with a new relay jase quite easy damo's thread tells you everything you need to know
quite easy damo's thread tells you everything you need to know Ps yes that bad................
I'd do anything on that car, and i mean EVERYTHING. But i'm shit scared of wiring!
use a 70AMP relay1.run thick wire frm battery + and - to the boot (put a fuse on +by batt)
2.take the + in to the relay live
3.take the - straight to the pump
4.take some new thick wire frm the switchable live to the pump
5. use the old + to swith to activate the relay
6.attach a earth to body then into the final relay slot
7. fit the new + and - where the old ones were in the connector
now your probably totally lost
31-08-2006, 02:00 PM
#11
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lol all you do is do away with the + and neg in the old connector BUT reuse the + to switch the relay to activate the + frm the battery 
and as said fit the new thick wires into the connectors like damo did in his thread
and as said fit the new thick wires into the connectors like damo did in his thread
31-08-2006, 04:56 PM
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https://passionford.com/forum/viewto...ghlight=wiring
This is a bit better, but leave the inertia switch in the old wiring - not the new!!
This is a bit better, but leave the inertia switch in the old wiring - not the new!!
31-08-2006, 11:10 PM
#16
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that pic looks fine to me jase but what i did is ran the red/black old +ve frm connector and earth through the boot out the way and cut the red/blk and earth where the connector was as you pictured at the top then taped the earth up and ran that red/blk as the trigger for the relay...
SO DO NOT TOUCH ANY OTHER WIRES THAN THE RED/BLK AND THE PLAIN BROWN!!!! (which you have in the top pic)
hope that helps
but what i did is ran the red/black old +ve frm connector and earth through the boot out the way and cut the red/blk and earth where the connector was as you pictured at the top then taped the earth up and ran that red/blk as the trigger for the relay...SO DO NOT TOUCH ANY OTHER WIRES THAN THE RED/BLK AND THE PLAIN BROWN!!!! (which you have in the top pic)
hope that helps
01-09-2006, 07:07 AM
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Originally Posted by adamski frst
that pic looks fine to me jase but what i did is ran the red/black old +ve frm connector and earth through the boot out the way and cut the red/blk and earth where the connector was as you pictured at the top then taped the earth up and ran that red/blk as the trigger for the relay...
SO DO NOT TOUCH ANY OTHER WIRES THAN THE RED/BLK AND THE PLAIN BROWN!!!! (which you have in the top pic)
hope that helps
but what i did is ran the red/black old +ve frm connector and earth through the boot out the way and cut the red/blk and earth where the connector was as you pictured at the top then taped the earth up and ran that red/blk as the trigger for the relay...SO DO NOT TOUCH ANY OTHER WIRES THAN THE RED/BLK AND THE PLAIN BROWN!!!! (which you have in the top pic)
hope that helps
You've just made it worse!
01-09-2006, 01:07 PM
#19
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Originally Posted by Wardy257
Do not run it direct from the battery!!!! Just check and clean he connectors. If you do want to replace/uprate the wiring do it as a a one for one swap, do not modifiy it.
01-09-2006, 01:09 PM
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Franco
Your diagram makes sense mate, but as a side note, the earth coming off the relay, no need to add a new wire in there, just use to old fuel pump earth (brown), obviously cut it back....
The hardest part about the whole thing is feeding the new chunky wires through the bulkhead and then modifying the original multiplug to include the new wiring......
Your diagram makes sense mate, but as a side note, the earth coming off the relay, no need to add a new wire in there, just use to old fuel pump earth (brown), obviously cut it back....
The hardest part about the whole thing is feeding the new chunky wires through the bulkhead and then modifying the original multiplug to include the new wiring......
01-09-2006, 02:54 PM
#22
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as damo said i just decided as i had some thick wire left to use new thick wire for the earth and just tape up the old one 
but the std earth on the relay will also as damo suggested work well
i just decided as i had some thick wire left to use new thick wire for the earth and just tape up the old one but the std earth on the relay will also as damo suggested work well
01-09-2006, 03:18 PM
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the thicker 2 are the fuel pump power and the smaller 2 are for the sender unit.
basically so you can drop the tank off and disconnect the wiring easilly there - or build it back up - which ever you are doing /..
make sure those connectors are clean as they are the ones that go scabby and dro the voltage to the pump - but if you are rewiring it and using them as the signal to drive your new relay, its not as important. IIRC they will pull back though the floor of the back of the shell and you can mount the relay in the boot
basically so you can drop the tank off and disconnect the wiring easilly there - or build it back up - which ever you are doing /..
make sure those connectors are clean as they are the ones that go scabby and dro the voltage to the pump - but if you are rewiring it and using them as the signal to drive your new relay, its not as important. IIRC they will pull back though the floor of the back of the shell and you can mount the relay in the boot
01-09-2006, 03:22 PM
#26
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Cheers Dave, i'll get my head around this soon............ish!
So what amp wiring should i be getting, type of relay etc etc?
Jesus someones going to have an easy instruction guide once we've finished!
So what amp wiring should i be getting, type of relay etc etc?
Jesus someones going to have an easy instruction guide once we've finished!
01-09-2006, 07:17 PM
#27
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Originally Posted by adamski frst
Originally Posted by Franco
Originally Posted by adamski frst
i ran one direct from the battery with a new relay jase quite easy damo's thread tells you everything you need to know
quite easy damo's thread tells you everything you need to know Ps yes that bad................
I'd do anything on that car, and i mean EVERYTHING. But i'm shit scared of wiring!
use a 70AMP relay 1.run thick wire frm battery + and - to the boot (put a fuse on +by batt)
2.take the + in to the relay live
3.take the - straight to the pump
4.take some new thick wire frm the switchable live to the pump
5. use the old + to swith to activate the relay
6.attach a earth to body then into the final relay slot
7. fit the new + and - where the old ones were in the connector
now your probably totally lost
any good leccy can give you good relays
then they usually go on how many wire strands in the wire forgot what one i had about 90 i think?? doesn't need to be amp wire, just go to a good electrician they will have the suitable stuff...all you need to buy is
1-about 6-7mtrs of thick blk and red wire
2-70 amp relay and plastic relay connector
3-thick wired fuse holder
4-a few fuses knowing you
5-soldering iron to do the job
6-heat shrink to do the joins
7-pvc tape to tape where needed
thats your shopping list, i got it all from a leccy
and a link to the relay in my boot
http://i2.photobucket.com/albums/y50...lpumprelay.jpg
02-09-2006, 07:36 PM
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My Relay is WELL hidden....
Jason, just bin the plug you show in the picture.......
adamski frst
I would move that relay mate, using that is THE EASIEST way to overide your immobilisers... Any decent thief could have your car running in seconds...
Jason, just bin the plug you show in the picture.......
adamski frst
I would move that relay mate, using that is THE EASIEST way to overide your immobilisers... Any decent thief could have your car running in seconds...
03-09-2006, 06:25 AM
#29
Too many posts.. I need a life!!
Originally Posted by Damo V
Originally Posted by Wardy257
Do not run it direct from the battery!!!! Just check and clean he connectors. If you do want to replace/uprate the wiring do it as a a one for one swap, do not modifiy it.
No offence to the person who posted the original question, but if they have to ask questions like this they probably should not be modifiying the wiring on their car.
03-09-2006, 04:41 PM
#30
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Well if you don't ask......... How are you meant to learn! 
You may think what they've done is wrong but thier are several tuners who've been doing this for years.........
And seeing as these cars were built in the early 90's, bringing them up to date will do them no harm!
Go figure eh!
You may think what they've done is wrong but thier are several tuners who've been doing this for years.........
And seeing as these cars were built in the early 90's, bringing them up to date will do them no harm!
Go figure eh!
03-09-2006, 05:49 PM
#31
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Originally Posted by Wardy257
Originally Posted by Damo V
Originally Posted by Wardy257
Do not run it direct from the battery!!!! Just check and clean he connectors. If you do want to replace/uprate the wiring do it as a a one for one swap, do not modifiy it.
.
By using the original pump live to fire up the new direct feed (relay) that will do the same job .................
03-09-2006, 09:54 PM
#32
Too many posts.. I need a life!!
Originally Posted by Damo V
Originally Posted by Wardy257
Originally Posted by Damo V
Originally Posted by Wardy257
Do not run it direct from the battery!!!! Just check and clean he connectors. If you do want to replace/uprate the wiring do it as a a one for one swap, do not modifiy it.
.
By using the original pump live to fire up the new direct feed (relay) that will do the same job .................
04-09-2006, 08:40 AM
#33
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a physical direct connectio to the battery would make the pump run ALL the time though, that is dangerous, hence the use of the relay and utilising the original cutt off switch and ecu swicthing to energise the new realy with heavy gauge wire from the battery to minimise volt drop though lots of connectors, smaller wires and relays.
04-09-2006, 02:38 PM
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i suppose its the max current rating ... and the larger the contact area of the contacts the less of a volt drop on the system, what'll do a lot will do a little
04-09-2006, 11:27 PM
#36
Advanced PassionFord User
Originally Posted by Damo V
My Relay is WELL hidden....
Jason, just bin the plug you show in the picture.......
adamski frst
I would move that relay mate, using that is THE EASIEST way to overide your immobilisers... Any decent thief could have your car running in seconds...
Jason, just bin the plug you show in the picture.......
adamski frst
I would move that relay mate, using that is THE EASIEST way to overide your immobilisers... Any decent thief could have your car running in seconds...
cheers damo it was only tempory but i shall be moving it all tomorrow
11-09-2006, 07:36 AM
#38
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Franco
Heres what i found when i checked mine out
I removed the plug all together with mine and just cut the wire back on both sides of the plug untill i found nice clean stuff. Just soldered in some fresh stuff and got some heat shrink on the joins. Ended up cutting around 18" of wire out from the car side of the plug as it was black every time i cut a peice off
Heres what i found when i checked mine out
I removed the plug all together with mine and just cut the wire back on both sides of the plug untill i found nice clean stuff. Just soldered in some fresh stuff and got some heat shrink on the joins. Ended up cutting around 18" of wire out from the car side of the plug as it was black every time i cut a peice off
11-09-2006, 09:15 AM
#40
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Originally Posted by Franco
Cheers Paul!
You justy removed the plug completely then yeah?
You justy removed the plug completely then yeah?
If you go down this route rather than the Batt / relay way then just make sure that when you cut the original wires back you have nice clean copper wire and not stuff with black in it. Like i said on the other page i had to cut a fair amount back to get clean stuff.
Originally Posted by Franco
did you have to lenghten the wiring at all?
Hope this helps.