Just wanted to share with all of you that own a CRX. This is my S2000 AP2 cluster swap write-up in my 1991 CRX SI. Hope all of my info helps you out. If you ever wanted to do the S2000 cluster swap in your 1990-1991 CRX. This info should help you out. On getting the AP2 S2000 cluster working in your CRX.These are the items you will need to make the AP2 S2000 cluster work in a CRX. AP2 cluster, Speedohealer V4 with universal harness, Modifry ECT Module, and a VSS Electronic speed sensor from a 1992-1995 Civic.
I have listed my wiring write-up below. And all the links to websites that, I got my info/stuff from. If you need any help feel free to pm me. I will try my best to answer your questions. Only thing not working on my AP2 cluster is the coolant gauge. I should have that up and running soon. I listed three videos of my AP2 cluster at the end of this post enjoy. 
1990-1991 CRX cluster pinouts: 2004-Present AP2 S2000 pinouts:
1. Left Turn - Green/Blue <-------------------> 1. Left Turn-Green/Red 30 Pin
2. High Beam - Red/Blue <-------------------> 2. High Beam-Red/Yellow 22 Pin
3. Coolant Temp - Yellow/Green <-----------> 3. Temperature-Yellow/Green 30 Pin
4. Gauge Light Brightness - Red/Black <-----> 4. Lights On Input-Red/Black 22 Pin
5. Guage Lights - Red <------------------------> 5. Dash Lights Dim Out-Red 22 Pin
6. Door Open Light - Blue/Yellow <-----------> 6. Door Open-Black/White 22 Pin
7. E-Brake - Green/Red <---------------------> 7. Parking Brake-Blue/Yellow 30 Pin
8. Oil Pressure - yellow/red <-----------------> 8. Oil Pressure-Yellow/Red 30 Pin
9. Check Engine Light - Green/Orange <----> 9. Chk Engine-Green/Orange 30 Pin
10. Switched 12v Power - Black/Yellow <---> 10. Ignition Key-Red/White 30 Pin
11. Battery/Alternator Light - White/Blue <-> 11. Alternator-White/Blue 30 Pin
12. Tachometer - Blue <----------------------> 12. Tachometer Input-Blue 30 Pin
1. Ground - Black <--------------------------> 1. Ground 2 Wires-Black 22 Pin
2. Vehicle Speed Plusar - Yellow/Red <----> 2. VSS Speed Sensor Signal Wire.
3. Empty <------------------------------------> 3. Empty
4. Trunk - Green/Black <--------------------> 4. Boot Open Light-Blue/Black 22 Pin
5. Seat Belt - Blue/Red <--------------------> 5. Drivers Seat Belt-Blue/Red 30 Pin
6. Fuel Gauge - Yellow/White <-------------> 6. Fuel Gauge-Yellow/Black 30 Pin
7. Switched 12v Power - Yellow <----------> 7. 12V Ignition Supply-Yellow 22 Pin
8. Right Turn Signal - Green/Yellow <------> 8. Right Turn-Green/Yellow 30 Pin
*To turn off the ABS light on the AP2 S2000 Cluster. Just ground the Blue/Red wire at location B20 on the 30 pin connector on the AP2 cluster.
*To remove the SRS/Air bag light. Just connect the Pink wire on the AP2 cluster to a constant 12V source. The AP2 Pink wire is at location B19 on the 30 pin connector on the AP2 cluster. I just connected the Pink wire to my positive battery.
*To keep the Clock Memory on the AP2 cluster. Connect the White/Red wire on the AP2 cluster to a constant 12V source. The Clock Memory wire is located at A10 on the 22 pin connector on the AP2 cluster. I connected the White/Red wire to my positive battery.
Speedohealer Wiring Info:
1. Red - Power
2. Black - Ground
3. Green - Goes to the speedo input wire on the S2K cluster Blue/White wire location B7 30 pin connector.
4. White - Goes to the speed sensor signal wire/Electronic VSS Speed Sensor signal wire.
Modifry ECT Module Info:
http://www.modifry.com/products/ect/ap2.htm
1992-1995 VSS Speed Sensor Wiring Info:
-Remember to make two wires for the VSS speed sensor signal wire. One wire will go to the Speedohealer White wire. And the Second one will go to the CRX Speed Pulsar Yellow/Red wire.
Links to where you can get the Speedohealer, Modifry ECT Module, S2000 AP2 Cluster, and VSS speed sensor:
-Speedohealer V4 With Universal Harness: http://www.procycle.us/main/speedo_healer.htm
-Modifry ECT Module: http://www.modifry.com/products/ect/ap2.htm
-AP2 Cluster: You can try Ebay, http://www.Honda-Tech.com in the classifieds, or dealer (expensive).
-1992-1995 Civic VSS Speed Sensor - I got mine from the Junk Yard for $40. You can also get one from Ebay. Or at your local Honda dealer which will run you about $200.
1990-1991 CRX Cluster Plug Pinouts:
2004-Present AP2 S2000 Cluster Pinouts:
http://www.marklamond.co.uk/pr...r.pdf
-My 1991 CRX SI with the AP2 S2000 Cluster installed. I have not received my lexan pieces in to cover up the gaps on the cluster:
Videos of My AP2 Cluster in action: 
http://www.youtube.com/watch?v=wfhDC1Fv1qo
http://www.youtube.com/watch?v=emR8HTCL7aA
http://www.youtube.com/watch?v=6O6wM8sRqeA
Modified by xalents23 at 8:56 AM 6/16/2008
CRX S2000 AP2 Cluster Write-Up/Video:
http://www.honda-tech.com/zerothread?id=2322849
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