951 V8 with Boxter 986/911 996 ABS ----- DONE :-)
#181
Pin 21 "Activation of ABS MIL (ground)" does not light when ABS is activating, it is the warning light. I have 21 connected to Pin 29 on the 968 side. It only lights when there is a problem with the ABS - like if you have an ABS reset switch. It will light when power is killed to the unit.
I did my wiring similar to yours except:
Pin 10 " D+" went to 968 ABS Pin 15 "D +"
I used the 968 ABS computer power to power the control module
Pin 15 "Control module power supply" to 968 ABS Pin 1
Pin 16 "Ground" to 968 ABS Pin 10
For Pins 17,18,19 I used the power/ground wires at the 968 pump.
I did my wiring similar to yours except:
Pin 10 " D+" went to 968 ABS Pin 15 "D +"
I used the 968 ABS computer power to power the control module
Pin 15 "Control module power supply" to 968 ABS Pin 1
Pin 16 "Ground" to 968 ABS Pin 10
For Pins 17,18,19 I used the power/ground wires at the 968 pump.
I think I've got mine working. Has anyone ever come up with an ABS activation light solution? Pin 29 will light up the mast caution light.
I did a conversion on an ABS equipped 968 by using the power wires from the original wiring loom to the pump, and then connecting everything else through a gutted ABS brain.
Here's an updated wiring list compiled from everyones work on this thread:
1. RR sensor ground connect to pin 26+
2. RR sensor signal connect to pin 24
3. —
4. RF sensor ground connect to pin 21+
5. RF sensor signal connect to pin 11
6. LF sensor ground connect to pin 6+
7. LF sensor signal connect to pin 4
8. LR sensor ground connect to pin 9+
9. LR sensor signal connect to pin 8
10. Instrument cluster processor (Only vehicles with EDL)
11. K wire ( to OBD connector pin 7 )
12. -
13. —
14. Stoplight switch — connect to pin 25
15. Power to unit - connect to black and blue wire on 944 harness at pump
16. Ground ABS return flow pump - connect to pump mont ground point
17. Positive battery voltage - connect to big red wire on 944 harness at pump
18. Positive battery voltage -- connect to big red wire on 944 harness at pump
19. Ground ABS control module - connect to pump mont ground point
20. Traction control indication light — not used
21. ABS light activation (Ground) — ?????
22. -
23. LR speed sensor - connect to pin 17 on 968 speedo
24. RR speed sensor — could also be used as speedo signal
25. -
26. -
.
I did a conversion on an ABS equipped 968 by using the power wires from the original wiring loom to the pump, and then connecting everything else through a gutted ABS brain.
Here's an updated wiring list compiled from everyones work on this thread:
1. RR sensor ground connect to pin 26+
2. RR sensor signal connect to pin 24
3. —
4. RF sensor ground connect to pin 21+
5. RF sensor signal connect to pin 11
6. LF sensor ground connect to pin 6+
7. LF sensor signal connect to pin 4
8. LR sensor ground connect to pin 9+
9. LR sensor signal connect to pin 8
10. Instrument cluster processor (Only vehicles with EDL)
11. K wire ( to OBD connector pin 7 )
12. -
13. —
14. Stoplight switch — connect to pin 25
15. Power to unit - connect to black and blue wire on 944 harness at pump
16. Ground ABS return flow pump - connect to pump mont ground point
17. Positive battery voltage - connect to big red wire on 944 harness at pump
18. Positive battery voltage -- connect to big red wire on 944 harness at pump
19. Ground ABS control module - connect to pump mont ground point
20. Traction control indication light — not used
21. ABS light activation (Ground) — ?????
22. -
23. LR speed sensor - connect to pin 17 on 968 speedo
24. RR speed sensor — could also be used as speedo signal
25. -
26. -
.
#182
Thanks Eric! I'll give your updates a shot. The pin 1 power (at 968 box) seems to be coming from the same relay as the black and blue wire at the 968 pump end which I connected to new pump 15 power supply. How did you figure out Pin 10 to 968 ABS Pin 15? I'm not sure I understand that one.
Updated list #3: Updated to V 4 - see post below
1. RR sensor ground connect to pin 26+
2. RR sensor signal connect to pin 24
3. —
4. RF sensor ground connect to pin 21+
5. RF sensor signal connect to pin 11
6. LF sensor ground connect to pin 6
7. LF sensor signal connect to pin 4+
8. LR sensor ground connect to pin 9+
9. LR sensor signal connect to pin 8
10. used to detect when vehicle is running (alternator in use) connect to Pin 15
11. K wire ( to OBD connector pin 7 )
12. -
13. —
14. Stoplight switch — connect to pin 25
15. Power to unit - connect to black and blue wire on 944 harness at pump
16. Ground ABS return flow pump - connect to pump mont ground point
17. Positive battery voltage - connect to big red wire on 944 harness at pump
18. Positive battery voltage -- connect to big red wire on 944 harness at pump
19. Ground ABS control module - connect to pump mont ground point
20. Traction control indication light — not used
21. ABS light activation (Ground) — pin 29 (ABS malfunction warning light)
22. -
23. LR speed sensor - connect to pin 17 on 968 speedo
24. RR speed sensor — could also be used as speedo signal
Updated list #3: Updated to V 4 - see post below
1. RR sensor ground connect to pin 26+
2. RR sensor signal connect to pin 24
3. —
4. RF sensor ground connect to pin 21+
5. RF sensor signal connect to pin 11
6. LF sensor ground connect to pin 6
7. LF sensor signal connect to pin 4+
8. LR sensor ground connect to pin 9+
9. LR sensor signal connect to pin 8
10. used to detect when vehicle is running (alternator in use) connect to Pin 15
11. K wire ( to OBD connector pin 7 )
12. -
13. —
14. Stoplight switch — connect to pin 25
15. Power to unit - connect to black and blue wire on 944 harness at pump
16. Ground ABS return flow pump - connect to pump mont ground point
17. Positive battery voltage - connect to big red wire on 944 harness at pump
18. Positive battery voltage -- connect to big red wire on 944 harness at pump
19. Ground ABS control module - connect to pump mont ground point
20. Traction control indication light — not used
21. ABS light activation (Ground) — pin 29 (ABS malfunction warning light)
22. -
23. LR speed sensor - connect to pin 17 on 968 speedo
24. RR speed sensor — could also be used as speedo signal
Last edited by car_slave; 03-06-2014 at 09:20 PM.
#183
See here: https://rennlist.com/forums/924-931-...out-there.html
I'm not sure why you labeled it "Instrument cluster processor".
#185
ABS!! It works!!
Thanks for all this information here, Guys. Never could've done it without it. What I found was that the 4-pin connector shown in the diagrams at the link Eric posted is the same on my '87 non-ABS car. That connector has everything I needed:
1 - brake light switch
2 - alternator trigger
3 - ignition switched power
4 - ANTI-LOCK light activation
Just now I started down my steep, wet, cold hill with the bias would all the way rearwards, stomped on the brakes and the car stopped. I could feel the pump pulsing in the pedal and heard a groan that was more subtle than I was expecting. But the car stopped quickly with no lockup.
Awesome!! Maybe now I won't turn so many tires square at the track.
Rich
Thanks for all this information here, Guys. Never could've done it without it. What I found was that the 4-pin connector shown in the diagrams at the link Eric posted is the same on my '87 non-ABS car. That connector has everything I needed:
1 - brake light switch
2 - alternator trigger
3 - ignition switched power
4 - ANTI-LOCK light activation
Just now I started down my steep, wet, cold hill with the bias would all the way rearwards, stomped on the brakes and the car stopped. I could feel the pump pulsing in the pedal and heard a groan that was more subtle than I was expecting. But the car stopped quickly with no lockup.
Awesome!! Maybe now I won't turn so many tires square at the track.
Rich
#188
ABS!! It works!!
Thanks for all this information here, Guys. Never could've done it without it. What I found was that the 4-pin connector shown in the diagrams at the link Eric posted is the same on my '87 non-ABS car. That connector has everything I needed:
1 - brake light switch
2 - alternator trigger
3 - ignition switched power
4 - ANTI-LOCK light activation
Just now I started down my steep, wet, cold hill with the bias would all the way rearwards, stomped on the brakes and the car stopped. I could feel the pump pulsing in the pedal and heard a groan that was more subtle than I was expecting. But the car stopped quickly with no lockup.
Awesome!! Maybe now I won't turn so many tires square at the track.
Rich
Thanks for all this information here, Guys. Never could've done it without it. What I found was that the 4-pin connector shown in the diagrams at the link Eric posted is the same on my '87 non-ABS car. That connector has everything I needed:
1 - brake light switch
2 - alternator trigger
3 - ignition switched power
4 - ANTI-LOCK light activation
Just now I started down my steep, wet, cold hill with the bias would all the way rearwards, stomped on the brakes and the car stopped. I could feel the pump pulsing in the pedal and heard a groan that was more subtle than I was expecting. But the car stopped quickly with no lockup.
Awesome!! Maybe now I won't turn so many tires square at the track.
Rich
#189
Now that the 10 pin is connected, hopefully my system will work. I'll find out in three weeks.
I did not attached 10 to the alternator wire, my 10 is on a fused switch that I will turn on after the car starts. I can then use the switch to cycle the abs is the abs light comes on showing a fault. Anyone see any issues with this setup?
I did not attached 10 to the alternator wire, my 10 is on a fused switch that I will turn on after the car starts. I can then use the switch to cycle the abs is the abs light comes on showing a fault. Anyone see any issues with this setup?
#191