Discussion
I have just obtained a Gunsons Fault Code Reader for £9 new on e Bay. I have an S3c and frustratingly cannot find where to plug it in!!!! I have pulled down the carpet and found the EEC 1V module which is the 88BBLB type.
The only socket that I can find to plug the Gunson tester in (3 pin type correct for an S3c 2936cc catalyst car) is white with a red end having the wiring colours
brown/red
brown/blue
yellow blue
According to the Steve Heath book this is the octane adjustment plug?
Any suggestions as to where to look gratefully received. I have removed the glove box and the loose harness in the area of the EEC 1V box and fuse box.
The only socket that I can find to plug the Gunson tester in (3 pin type correct for an S3c 2936cc catalyst car) is white with a red end having the wiring colours
brown/red
brown/blue
yellow blue
According to the Steve Heath book this is the octane adjustment plug?
Any suggestions as to where to look gratefully received. I have removed the glove box and the loose harness in the area of the EEC 1V box and fuse box.
Believe it or not I am pretty sure that I have now found the relevant plugs. The octane adjust is white with a red coloured end that fits the Gunson fault code reader, but is of course the incorrect plug.
The diagnostic plug is also white and has 3 male pins and has brown, brown/green and blue/green wires. It does not fit the input plug for the Gunson reader, so I will have to make a suitable adaptor lead. I have photographs but cannot paste them to this message at present!!
The diagnostic plug is also white and has 3 male pins and has brown, brown/green and blue/green wires. It does not fit the input plug for the Gunson reader, so I will have to make a suitable adaptor lead. I have photographs but cannot paste them to this message at present!!
This has turned into a really interesting one. Thanks again for all contributions, nice to know (tvrgit) that I am not alone.
Yesterday afternoon I scotchloked 3 wires into the wires leading to the connector that I reckon is the correct one, ie the one with 3 male pins. I then connected these to the gunson plug using cut off spade terminals. I tried to connect the colours as Bil describes for his car
Partial result in that the Gunson reader clearly takes control of the engine in 'service mode' the revs rising to 1500, then 2000 rpm. I was then able to re-set the timing to 12 deg btdc in 'service mode', which was all I really wanted to do!!!! However there are no led codes shown on led of the reader?!
It is just so surprising that the connector shapes and colours changed, I guess that garages with expensive diagnostic kit have the necessary adaptors to suit?
Yesterday afternoon I scotchloked 3 wires into the wires leading to the connector that I reckon is the correct one, ie the one with 3 male pins. I then connected these to the gunson plug using cut off spade terminals. I tried to connect the colours as Bil describes for his car
Partial result in that the Gunson reader clearly takes control of the engine in 'service mode' the revs rising to 1500, then 2000 rpm. I was then able to re-set the timing to 12 deg btdc in 'service mode', which was all I really wanted to do!!!! However there are no led codes shown on led of the reader?!
It is just so surprising that the connector shapes and colours changed, I guess that garages with expensive diagnostic kit have the necessary adaptors to suit?
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