there's three wires and a ground vtec solenoid, oil pressure switch, knock sensor, and a ground that can go anywhere in the engine bay as long as it's on metal
here's everything you need to know
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This article exploits a combination of ECU pin locations and wire colors for all
M/T '92-95 Civic / '92-95 Integra / '92-95 Prelude VTEC and NON-VTEC vehicles.
OBD1 PLUG CONFIGURATION
Below is an example that shows the common onboard male connectors for a Honda OBD1 ECU.
Take note of plugs:
A,
B, and
D.
The 4-plug OBD1 connector image below is proof these do exist and are usually found on JDM AUTO 92-95 Civic, Integra, and Preludes.
Sorry - I do not have pin schematics for the JDM 4-plug OBD1 ecu! Although, connectors A B D should technically be the same pin locations as a 5spd 3-plug OBD1 ECU.
ADDITIONAL INFORMATION
These pin-out locations were cross-referenced with OBD1 Civic/Integra/Prelude Helm's service manuals.
The information in this article applies to:
- All US & JDM OBD1 (92-95) M/T civic ecu's
- All US & JDM OBD1 (92-95) M/T integra ecu's
- All US & JDM OBD1 (92-95) M/T prelude ecu's