vroooom ptssssh

Got this fuel pump relay in a swap, but noticed the pin far right on its own wiggles from left-right..butim assured it does work.

Does anyone know what this pin is for, is it an earth or soemthing?

Also, My car is a series 1, but has a series 2 fuel pump relay holder, I got the car with a wire bridging the fuel pump to run constantly, as no relay was present...

Im not sure if its only the holder that has been changed, im assuming it was changed to accomodate a serie 2 fuel pump relay as they are easier to get a hold of....however ive got the series 1 relay as its more reliable than a series 2 effort and im told the wiring positions (if previously changed for an S2 relay) can be swapped back round in the S2 holder to refit the s1 relay....does anyone know which wire goes to which pin on the S1 relay? and what about this extra pin?

beside the pins on the relay I have the numbers:

30
31
87
15
1


And the one on the other side on its own is:

50

any help would be appreciated, would like to get it running on the S1 relay for friday when im insured to drive the car legally for the first timeever in 3yrs

vroooom ptssssh

Terminal Number Connection
30 Permanent battery live
31 Earth
1 or 31b Coil negative
15 Switched 'Ignition on ' voltage
87 Output to fuel pump


Would these be correct for a series 1 relay?

PeterD

I think your right dave ( 1.45 am and raiding my haynes manual for you by the way )

30 PBL
31 earth
1 coil
87 fuel pump

15's a brown wire which im sure is the ingnition on as said but cant guarentee it, so long as your wiring is still in the original nic ill get a photo of mines tomorrow after work and post it up for you

do any of the other spades wiggle at all? if so crack it open and give it a clean up and a solder and itll be righ as rain.

vroooom ptssssh

Ive had my head stuck in the haynes too, and for the life of me I cant work out the wiring diagram on WD.11

I meant to type pin 50 not 15

thanks for your help Pete, appreciated at this rate i'll be takin it to my auto spark with S1 AND S2 fuel pump relays and left in a locked room until it comes out running

PeterD

fuck i thought i was up late

the haynes diagrams are bit on the cryptic side though mate, thing i was mesing about with my regulator and wiring not that long ago, ive not driven my car since october and its pissing me off

vroooom ptssssh

I'd jus woke up...fell asleep on the couch lol

I dunno what to do, ive got 2 series 2 relays I could try (but they need repaired) dont want to plug in either relay incase its wired for the opposite one and I blow sumthing

PeterD

dave i got a picture but its shite ill get one again tomorrow mate

vroooom ptssssh

Thanks allot Pete, could you see if you can see where pin 50 goes? cheers bud. I think i'll take it to my sparky as dont wanna mess it up an wanna know its alright, he'll prob do it for a fiver, will get him to check wiring is sound and pump isnt drawing too much current etc

Smiggy

Dave, Relay deffo works. Hadn't noticed the single pin being a bit shoogly but the other one had a bit of a rattle from inside and although worked I wasn't wanting to give you that one.

I've had a look at my wiring tonight for you. tried to take a pic but not easily accessible. so here goes

Pin 30 :- Thick red wire (Live Feed)
Pin 1 :- Thin green wire with either a red or orange (couldn't make out clearly)stripe running down it
Pin 87 :- 2 thin black wires with red stripe
Pin 15 :- 1 thin solid black wire and also 1 thin black with green stripe
Pin 31 :- Brown (Earth)

Pin 50 :- has a small single black plug with a thin black wire with yellow stripe


Hope this helps mate

SMG

vroooom ptssssh

Smiggy, no problem at all man, I trust it works

Thats a huuge help, and hopefully when I go and have a look tommorow i'll be able to find all these wires and get it wired up! great help mate cheers!

Im just wondering about pin 50 tho, what it actually does, I think its some sort of switched earth? but will I be able to use the relay without tht wire if I cant find it...I know the S2 relay doesnt use it so it must still be their hanging about or wired to something else?

cheers again mate


Right, I know 30 & 87 are what I bridge just now, this looks to be the same for the S1 and S2 relays for main power feed to pump, so jus need to figure out which other wires I swap round if any?

Smiggy

No worries, looks like all the wires come off main loom coming down from fuse box area. Don't know about it working without the single connection on. I can try that for you tomorrow night. If my car was taxed and that I would bring it round yours and we could have a go at it then with something to compare with but will be mid april before I get mine on road.

vroooom ptssssh

Good man that would be a help if you could try it! cheers

I'll get their, if I cant i'll just take it to my sparky as mentioned, im ared now with what wire is what its just a case of changing them now I think (apart from that damn pin 50...altho im sure its jus swinging about under my dash!! will let you know tommo)

Thanks smiggy, hopefully mine, yours and petes will be working and we'll get them parked up beside each other next PF meet!! dont wash your cars tho so mine looks a bit better

SafeChav

vroooom ptssssh im really sorry mate havent had a chance to get into the manuals!

Not ignoring ya or anything like that! I get so many PM's these days asking everything under the sun, its hard to keep up

vroooom ptssssh

SafeChav, No worries mate, I can immagine how busy you'll be these days bein prob the only PF ERST spark lol!

I think ive kinda cracked it, jus that pin on its own im confused about, hopefully when I go to check the wires tommo they'll all be the right colours and present so it'll be jus a case of configuring them in the right order.

proper ball ache when you know absoloutly jack all about it/wiring tho

If you get a chance let me know what you come up with cheers.

SafeChav

Im pretty sure the individual pin is a Black/Yellow wire.

its a switched feed for something.

HANG ON ill get the diagrams out now

vroooom ptssssh

I think you enjoy it really......

SafeChav

Nah i just feel like a cunt when i know i can answer the questions but havent actually answered them!

I had to convert that S1 i worked on to accept a S2 relay, and it worked first time

vroooom ptssssh

Ach dont be daft man, as long as I can get it changed by saturday to run A relay prefferably S1 i'll be happy as thats when my insurance starts, givin the car a good seein to tommorow so while im at it could check the wiring then to see whats what.

im assuming its been changed to an S2 relay, why else change the holder (altho why change it in the first place, instead of jus swappin wires? )

SafeChav

Davvy, i need you to label the pin numbers on the diagram above.

vroooom ptssssh

jus doin it now

vroooom ptssssh

SafeChav

Right.......there will be a couple of things to do though.

You may find the green/red in your car has been cut and joined, being as the S1 relay needs a 5v Square Wave input from the dizzy, and a purple relay needs a switched earth to operate.

And 50, is Black/Yellow as i said, its an ignition feed from the switch! Should be a surplus black yellow in amongst your wiring.

vroooom ptssssh

TOP man Andy,

One question

What would the green/Red be joined to now?

thanks allot

SafeChav

It'll be joined up to the rev counter wire i expect, green!

It might not be though, did yours have a S2 relay in it? Or just the bridge wire?

vroooom ptssssh

It was just bridged when i got the car, will check that out tho cheers

Moonie

50 is a cranking feed (only live with the key in position 3)

SafeChav

WELL SPOTTED

I fucked up there! Thought it was wierd when i posted it

vroooom ptssssh

Right, it appears all wires are present, even the black/yellow

Jus gotta swap them about now, I reckon i'll take it to monj auto spark on saturday, he'll prob do it in 2 mins an charge a fiver, an if it breaks...its his fault

Cheers for the help, mucho appreciated!

Now on to my next problem.....le overboosting

SafeChav

Mate you can't be serious after that!

Just use a very small precision screwdriver to unhook the terminals and re-insert them back in their corrects places.

Its SO easy you are throwing money away if you pay someone else to do it!

vroooom ptssssh

He'll only take a fiver, its my pals pal...I jus dont wanna fook it up


See the wire you said 'might' be connected to the rev counter, would the end of it be connected to the relay holder but maybe half way up the wire, connected to the rev counter one? or is it if its jus connected to the relay holder, its not near the rev counter?

SafeChav

A fiver is a fiver mate, and even more so to both yourself and me, we are both in the same boat!

The Green/Red may be connected elsewhere........if its had a bridge wire in it since u bought it, my guess is it wont be cut though, the probably plugged the purple relay in and when it didnt work gave up and used a shitty wire!

Nothing ventured nothing gained mate..........as long as u keep that red well away from shorting out on anything you'll be fine (as the red is unfused)

vroooom ptssssh

Yea, well this is true! spent some cash on it today, jus small things, got new braided fuel hose as other was rotten

Cool, i'll trace the wire back then and double check it! your convincing me to try this myself I suppose I cant go wrong, ive got all the info I need...it's jus the fatefull "click" as you turn the ignition on that im worried about

SafeChav

Above all.........you dont just swap wires round and plug it in and hope for the best, test what youve got before plugging the relay in!

Check, check, and double check! Ive not had any problems

vroooom ptssssh

I would, but im fucked if I know how to work a voltmeter

SafeChav

So you dont know how to set a dial to 20V DC range, and test for 12v

And you cant set it to continuity test and look for a reading as close to 0 ohms as possible to continuity test wires

vroooom ptssssh

do what?