Hi,
I am in the process of fitting air con to my 325. The plug that fits into the temperature switch in the rad was missing but i have sourced one just need a pic of what colour wires go where in the connector?? Its factory fit air con and there are 3 wires going to the plug.
Any help greatly appreciated!
Anyone with air con in a 325 need a favour
Moderator: martauto
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bmwe30mtech
- Engaged to the E30 Zone
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I know the plug you mean. It is dark now, but if you don't get an answer before I'll take a look at mine in the morning and post it up for you.
1988 M3 EvoII, Macau Blue/EvoII trim
1989 325i Sport M Tech II, Diamond Black/Black leather
1989 325i Sport M Tech II, Diamond Black/Black leather
Pin 1 Green/black
Pin 2 Black
Pin 3 Black/brown
http://shark.armchair.mb.ca/~dave/BMW/e30/e30_89.pdf
Pin 2 Black
Pin 3 Black/brown
http://shark.armchair.mb.ca/~dave/BMW/e30/e30_89.pdf
This might b a stupid queation but as you look at the plug from the rear which wires are 1,2,3?? Is it top, bottom left, bottom right or top bottom right, bottom left?? anybody have a pic or can tell me??bss325i wrote:Pin 1 Green/black
Pin 2 Black
Pin 3 Black/brown
http://shark.armchair.mb.ca/~dave/BMW/e30/e30_89.pdf
If you look closely at the plug the pins should be numbered.
I don't have my car to hand to check.
I don't have my car to hand to check.
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Brianmoooore
- E30 Zone Team Member
- Posts: 49359
- Joined: Mon Jan 10, 2005 11:00 pm
Looking into the buckets of the plug, 2 is on the left, 1 is in the middle and 3 is on the right.
Numbers should be on the rear cover of the plug.
Numbers should be on the rear cover of the plug.
numbers must have worn off.Brianmoooore wrote:Looking into the buckets of the plug, 2 is on the left, 1 is in the middle and 3 is on the right.
Numbers should be on the rear cover of the plug.
so is that 2 is on the left, 1 is in the middle and 3 is on the right holding the plug so that 1 would be to the top or to the bottom? Sorry another stupid question but i taught i could make out a 3 on one side of it and was on the right if you held it so the 1 in the middle was to the bottom!
Thanks,
John
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mick_318is
- E30 Zone Regular
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- Joined: Thu Oct 19, 2006 11:00 pm
- Location: West Berkshire
best to post a picture of your new plug. So that there's no more confusion as to which is up / down / right left.
E30less again.
Did a bit of inquiring this evening and the plug i have is actually off an e36. Still the same only different shape and wires are different colour. Here is a picture of the plug.
so would i be right in saying as in photo 1 the wires are numbered:
1 Top Middle
2 Bottom left
3 Bottom right.
Any help greatly appreciated.
john
so would i be right in saying as in photo 1 the wires are numbered:
1 Top Middle
2 Bottom left
3 Bottom right.
Any help greatly appreciated.
john
It is a bit confusing with you having different colour wires.
Perhaps if you knew what the connections do then you can work it out.
The sensor screwed in the radiator is a double thermal switch.
The centre pin (1), normally Green/black wire, is common and must get +12 volts when ignition is ON.
When the temperature of the coolant reaches 90 degrees Centigrade, the common centre point gets switched over to pin (2), normally wire colour black. This energises relay K1...normal speed relay. This relay should also energise via a diode when you press the blue AC button down.
When the coolant reaches 99 degrees Centigrade, the common centre pin gets connected to pin (3), normally Black/Brown wire...this is while the 90 degree switch stays closed.
This now energises relay K6...high speed relay.
So you should find +12 volts on the central pin when ignition is ON.
If you jumper that +12 volts to one of the other pins then either Relay K1 or Relay K6 will energise...jumper them at the same time and both relays energise.
To test the temp sensor you can fit your Ohm meter to the centr pin on the sensor and gently heat up the sensor with a heat-gun or hairdryer. At a certain point you will see that you will get continuity to one of the other sensor pins...that is the normal speed relays' power actuation.
Heat the sensor a bit more and you should get continuity to the other sensor pin. That is for the High speed relay K6.
So basically pushing the AC blue button energises Relay K1 and this relay also gets energised at 90 Degrees centigrade.
Relay K6 is the high speed relay and gets energised at 99 degrees Centigrade.
Perhaps if you knew what the connections do then you can work it out.
The sensor screwed in the radiator is a double thermal switch.
The centre pin (1), normally Green/black wire, is common and must get +12 volts when ignition is ON.
When the temperature of the coolant reaches 90 degrees Centigrade, the common centre point gets switched over to pin (2), normally wire colour black. This energises relay K1...normal speed relay. This relay should also energise via a diode when you press the blue AC button down.
When the coolant reaches 99 degrees Centigrade, the common centre pin gets connected to pin (3), normally Black/Brown wire...this is while the 90 degree switch stays closed.
This now energises relay K6...high speed relay.
So you should find +12 volts on the central pin when ignition is ON.
If you jumper that +12 volts to one of the other pins then either Relay K1 or Relay K6 will energise...jumper them at the same time and both relays energise.
To test the temp sensor you can fit your Ohm meter to the centr pin on the sensor and gently heat up the sensor with a heat-gun or hairdryer. At a certain point you will see that you will get continuity to one of the other sensor pins...that is the normal speed relays' power actuation.
Heat the sensor a bit more and you should get continuity to the other sensor pin. That is for the High speed relay K6.
So basically pushing the AC blue button energises Relay K1 and this relay also gets energised at 90 Degrees centigrade.
Relay K6 is the high speed relay and gets energised at 99 degrees Centigrade.
I cannot help you here unfortunately as my plug disintergrated a long time ago and is now encased in epoxy so I cannot read any numbers and it was a long time ago that I did the testing with a heat gunswin wrote:Thanks for that if someone could give me the positions of pins 1,2,3 on the plug or temp switch I'll work it out from there!
As you look at the sensor on the rad from the drivers side (rhd car) what colour wire goes to the top pin, pin nearest the bulkhead and nearest the front of the car? If I know the location each wire goes to I can match them to my plug?
Or even is the top plug the common and is the left and right for low and high speed?
Thanks
Or even is the top plug the common and is the left and right for low and high speed?
Thanks
I do not know if the above could be valid as I think the sensor could probably rotate in the radiator (I have never changed one) so the orientation could be any which way up.swin wrote:As you look at the sensor on the rad from the drivers side (rhd car) what colour wire goes to the top pin, pin nearest the bulkhead and nearest the front of the car? If I know the location each wire goes to I can match them to my plug?
Or even is the top plug the common and is the left and right for low and high speed?
Thanks
Heat the sensor up with a heat gun and measure with an Ohm meter which is the common point, which is the 90 degree pin and which is the 99 degree pin.
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Brianmoooore
- E30 Zone Team Member
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- Joined: Mon Jan 10, 2005 11:00 pm
I know the colours of the wires that should go to each pin of an E36 plug, but your wires look nothing like the correct colours in your pics.
Brianmoooore wrote:I know the colours of the wires that should go to each pin of an E36 plug, but your wires look nothing like the correct colours in your pics.
Hi Brian,
The plug came from a 1997 e36 318is. It fits perfectly so if I knew which wires from the e30 loom corresponded to the buckets of the plug (photo 1) or the pins on the switch I can work it from there. I will be changing it for an e30 plug when I come across one. Any help greatly appreciated as I'm trying to get the car back on the road for the summer.
Thanks again,
John