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90clutchcut [2008/01/23 07:00]
76.100.119.159 created
90clutchcut [2024/03/15 11:16] (current)
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-====== ​Overview ​======+====== ​Clutch Cut Wiring in a '​90 ​======
  
-As many of you know, the '90 models have quite a number of little differences between the '91+ model years. One of these is cruise control switch functionality -- on '91+ cars the cruise control switch is a switch to ground, however on the '90 cars it is a switched 12v line.  This means that the clutch-cut wire which was included with your DSMLink ​package will not work on the cruise-control switch (it DOES work correctly if installed on the starter switch), and you will need to do a little more work if you want to use NLTS on a '90 DSM using the cruise switch (the one activated when your foot is completely off the pedal).+As many of you know, the '90 models have quite a number of little differences between the '91+ model years. One of these is cruise control switch functionality -- on '91+ cars the cruise control switch is a switch to ground, however on the '90 cars it is a switched 12v line.  This means that the clutch-cut wire which was included with your ECMLink ​package will not work on the cruise-control switch (it DOES work correctly if installed on the starter switch), and you will need to do a little more work if you want to use NLTS on a '90 DSM using the cruise switch (the one activated when your foot is completely off the pedal).  
 + 
 +Note: The ECU diagram here [[https://​www.ecmtuning.com/​images/​forums/​1GECUPinout.pdf]] shows the wire into the ecu as black w/yellow, although at least one person has reported that their 90 talon has black wire with red dots instead. 
 + 
 +**VIDEO**: One of our customers, Robert Baxley, has provided a [[http://​www.youtube.com/​watch?​v=91c29VDzNak&​list=UUd8JfwGxmRb5P7nMVRzSPng&​index=1&​feature=plcp|how-to video]] on this.
  
 ====== Method 1 ====== ====== Method 1 ======
  
-The simplest method on a '90 DSM is to cut the wires going to the cruise clutch switch and rewire them to match the more common 91+ configuration. ​ The ECU/DSMLink ​just wants to see a switch to ground on the ECU input. ​ So cut both wires going to the clutch switch. Then rewire one side to chassis ground and the other side to the ECU input. Check all this with a meter, of course, but once that's done, you should be set.  The one drawback to this method is that you will lose cruise control cut out with clutch pedal activation. ​ For most people, that's not a big deal because they either no longer have cruise installed or they don't use that particular feature anyway.+The simplest method on a '90 DSM is to cut the wires going to the cruise clutch switch and rewire them to match the more common 91+ configuration. ​ The ECU/ECMLink ​just wants to see a switch to ground on the ECU input. ​ So cut both wires going to the clutch switch. Then rewire one side to chassis ground and the other side to the ECU input. Check all this with a meter, of course, but once that's done, you should be set.  The one drawback to this method is that you will lose cruise control cut out with clutch pedal activation. ​ For most people, that's not a big deal because they either no longer have cruise installed or they don't use that particular feature anyway.
  
 ====== Method 2 ====== ====== Method 2 ======
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 This method is a bit of work.  It's provided here because it does technically allow you to keep cruise cut operation with clutch pedal activation if you happen to still have cruise control installed. ​ But it's probably more work than it's worth. This method is a bit of work.  It's provided here because it does technically allow you to keep cruise cut operation with clutch pedal activation if you happen to still have cruise control installed. ​ But it's probably more work than it's worth.
    
-1. Splice a long wire from the cruise-control side of the switch (green with black stripe) and run it to the vicinity of the ECU connector. +  - Splice a long wire from the cruise-control side of the switch (green with black stripe) and run it to the vicinity of the ECU connector. 
-2. Connect one end of a 10K-ohm resistor in series with the long wire (at the ECU end). +  ​- ​Connect one end of a 10K-ohm resistor in series with the long wire (at the ECU end). 
-3. Connect the other end of the resistor to the base of an NPN transistor (a 2N2222A is fine). +  ​- ​Connect the other end of the resistor to the base of an NPN transistor (a 2N2222A is fine). 
-4. Connect the emitter of the transistor to the grounded end of the cut wire on ECU pin 104. +  ​- ​Connect the emitter of the transistor to the grounded end of the cut wire on ECU pin 104. 
-5. Connect the collector of the transistor to the cut wire going to ECU pin 104.+  ​- ​Connect the collector of the transistor to the cut wire going to ECU pin 104. 
  
 +{{https://​www.ecmtuning.com/​images/​forums/​90%20clutch%20switch.JPG|Diagram}}
  
-{{http://​www.dsmlink.com/​images/​forums/​90%20clutch%20switch.JPG|Diagram}} 
90clutchcut.1201089615.txt.gz · Last modified: 2008/01/23 07:00 by 76.100.119.159