wiring question
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wiring question
howzit members.... on the 4 pin water temperature sender(mp9).... where does the 4th pin connect to?
Please help as this is the only cable left for me to start my mp9 conversion.
Please help as this is the only cable left for me to start my mp9 conversion.
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Re: wiring question
anyone??
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Re: wiring question
The 2 brown ones are ground, one is signal for the ECU and the other is signal for the temperature gauge in the dash.Insanetec wrote:howzit members.... on the 4 pin water temperature sender(mp9).... where does the 4th pin connect to?
Please help as this is the only cable left for me to start my mp9 conversion.
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Re: wiring question
thanks macman, so basically its n/a when we do a carb to mp9 conversion? Is it compulsary?
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Re: wiring question
As long as the ECU gets its signal from the correct pin on the sender, then you will be fine. IIRC the correct wire is grey / green.Insanetec wrote:thanks macman, so basically its n/a when we do a carb to mp9 conversion? Is it compulsary?
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Re: wiring question
The purple goes to the the cluster. so the other is for the ecu
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Re: wiring question
Howzit gents.... does it have to be connected to the cluster? Cant I leave it as is because the heat guage will still work on the existing harness??
Whats the purpose in connecting the signal wire to the cluster? If I do connect the wire, where on the cluster is it, or can I not bridge it somewhere in the engine bay?
Whats the purpose in connecting the signal wire to the cluster? If I do connect the wire, where on the cluster is it, or can I not bridge it somewhere in the engine bay?
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Re: wiring question
Im pretty sure the 4 pin sensor had only one ground.
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Re: wiring question
sheizen.... this not helping now.....
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Re: wiring question
Then what is the 4th pin for?Killerwatt wrote:Im pretty sure the 4 pin sensor had only one ground.
The 4 pin sender is basically 2 senders in one. Each sender has a ground and a signal wire.
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Re: wiring question
From a thread I asked the same question. Panic Mechanic and Maranou helped me out.
the 4 pin sender is basically exactly what you want - it is in reality 2 separate water temp senders in one device. It's also very easy to see which wires are paired. Take an ohm meter and measure a pair of wires. If you get a resistance then that is a pair. If you measure two wires and it has no value then they belong to the other pair.
So take this figure
1 2
3 4
if you meaure 1,3 and you get no value and then measure 1,2 and get a value then you will know that 1,2 is one pair and 3,4 is the other pair.
As for you other questions - sorry can't help. Don't use that system.
Hope it helps.Pin 1 and 3 onplug at water temp sensor go to management and 2 gets earthed and 4 go to dash temp gauge.
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Re: wiring question
thanks bro....
can someone tell me which wire I use fromt he dash and which will be the easiest way to trace it? MY first question still stands.... its it necessary to use the 4th pin?
can someone tell me which wire I use fromt he dash and which will be the easiest way to trace it? MY first question still stands.... its it necessary to use the 4th pin?
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Re: wiring question
If you converting from carb to F1 (MP9) the original temp gauge wire just went onto a sensor on the water outlet pipe on the front of the head.
As per my post 1 and 3 go to the ECU, number 2 gets earthed (As the whole housing is plastic and not metal like the original one) and 4 goes to your Dash temp gauge.
On this pic I used Blue and Brown/Blue for the management. I earthed the Brown Green and connected the Yellow/Red to the original Temp Gauge wire which, if i remember correctly is also Yellow/Red. This wire should be in the original car harness.
Hope it helps once again. Good Luck.
As per my post 1 and 3 go to the ECU, number 2 gets earthed (As the whole housing is plastic and not metal like the original one) and 4 goes to your Dash temp gauge.
On this pic I used Blue and Brown/Blue for the management. I earthed the Brown Green and connected the Yellow/Red to the original Temp Gauge wire which, if i remember correctly is also Yellow/Red. This wire should be in the original car harness.
Hope it helps once again. Good Luck.
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Re: wiring question
Thanks bro... thats exactly what I was looking for. A picture does seak a thousand words.
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Re: wiring question
GolfGTI wrote:From a thread I asked the same question. Panic Mechanic and Maranou helped me out.
the 4 pin sender is basically exactly what you want - it is in reality 2 separate water temp senders in one device. It's also very easy to see which wires are paired. Take an ohm meter and measure a pair of wires. If you get a resistance then that is a pair. If you measure two wires and it has no value then they belong to the other pair.
So take this figure
1 2
3 4
if you meaure 1,3 and you get no value and then measure 1,2 and get a value then you will know that 1,2 is one pair and 3,4 is the other pair.
As for you other questions - sorry can't help. Don't use that system.Hope it helps.Pin 1 and 3 onplug at water temp sensor go to management and 2 gets earthed and 4 go to dash temp gauge.
Yes pin 1 and pin 3 go to the ECU.
Pin 1 on the sender plug goes to pin 17 on the MP9 ECU, which as I said, is ground.
Pin 3 on the sender plug goes to pin 42 on the MP9 ECU, which is the signal wire.
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Re: wiring question
Thanks MacMan. Was not sure about the pin outs for the MP9. Another Dubber satisfied.
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Re: wiring question
Thanks Macman
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Re: wiring question
If I remember correct the heatgauge will read incorect as the mp9 sensor uses lower resistance,thus the gauge will show lower than actual heat
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Re: wiring question
Hopefully someone has managed to sort this out? My carb to mp9 conversion almost done, car starts but fan is not coming on... i think it is due to the heat gauge not getting a signal?
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Re: wiring question
Fan does not get the signal from there, it comes from a thermostat on the side of the radiator
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Re: wiring question
Thermoswitch actually...Quik-Trix wrote:Fan does not get the signal from there, it comes from a thermostat on the side of the radiator
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Re: wiring question
Thanks will check today after work, car has a few kinks to sort out.
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Re: wiring question
Haha thanks Torker, learnt something new