rad fan help

[SCHWARTZ]

trying to wire the rad fan back up but cant find the relay where dose it usually hide?

[James5]

trying to wire the rad fan back up but cant find the relay where dose it usually hide?

Prob hanging around under the alternator matey, normally attaches to the plastic cowling that sits in front of the alternator

[TrixNFlix]

its attached to the back of the radiator cowling, that piece that locates in front of the alternator.

[SCHWARTZ]

i have no rad cowling il go have a look i know theres one under my drivers side light but thought that was for fogs etc and got one where the old aei unit sat but dont know what that one does. cheers guys

[SCHWARTZ]

cant see it and dont remember taking it out if anything i would have just un pluged from it. Is there another way of wiring it up piggybacking off of another relay etc...

[SCHWARTZ]

is it poss to take power from the alternator to the fan and have the earth going through the stat? would that work or just blow up

[rat1]

the rad fan relay on my one is green i think think this is nominal and it near the alternator. follow the wires from the fan.it needs its own relay

[James5]

is it poss to take power from the alternator to the fan and have the earth going through the stat? would that work or just blow up

Gary if you want you can make a seperate wireing system just for the rad fan and switch and run it all from the alternator matey. I know this can be done as I have this on mine,

https://www.rtoc.org/boards/showthrea...radiator+relay

[James5]

the rad fan relay on my one is green i think think this is nominal and it near the alternator. follow the wires from the fan.it needs its own relay

Rad fan relay is black and looks identical and is identical to all the other relays under the bonnet


The one you had next to the AEI gary is the relay for the AEI itself, willbe redundant for you now matey

[SCHWARTZ]

cheers matey thats kinda what i was thinking but a cruder version Can i take that relay off and use that for my rad fan then james? or would it mess something else up?

[SCHWARTZ]

also this is just being a div but on the diagram relay it has 86, 87, 30, 85, but on my relay it has 1,2,3,4,5 dose anyone what numbers correspond to what or how do i find out?

[James5]

cheers matey thats kinda what i was thinking but a cruder version Can i take that relay off and use that for my rad fan then james? or would it mess something else up?

Should be ok to use all depends how you have wired up the Volvo bits, if you have used exisiting AEI connections that go through the relay you will prob have to leave it in place but if you haven't remove it and use that relay

[SCHWARTZ]

na volvo loom staying seperate from old loom taking it off of the ignition barrel and alternator. anyone got and ideas on the relay

[TrixNFlix]

id say 1= 85
2=86
3= 30
4= 87a
5= 87

i think

[James5]

id say 1= 85
2=86
3= 30
4= 87a
5= 87

i think

Prob best to look at the pins and look a the image attached it may help you work it out

[SCHWARTZ]

cheers guys i should be able to sort it from that.

[tiff_lee]

I'd just wire it up via a standard 4 pin relay using the alternator for supply and ground with the fan switch as the trigger, it leaves very little to go wrong and if it does makes fault finding even easier.

[SCHWARTZ]

ive worked it out as
1-86
2-85
3-30
5-87 dose this seem right?

[SCHWARTZ]

wired it up as in the diagram may try and get a 4pin relay but at min 5pin will do. will have to wait and see if it works. cheers for the help chaps

[tiff_lee]

You don't specifically need a 4 pin, if you have a 5 pin you just leave out pin 87a (the middle one)

[SCHWARTZ]

yer thats what i have done was just in case i hadnt worked out the pins correctly

[Dave Reed]

Just short out the fan switch if you want to test it...