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Make sure all intended engine and vehicle side connections have been made before proceeding to connect power.
MAIN BATTERY
CONNECTION
Attach a 12 volt ignition switch feed from the vehicle to the pink ignition switch wire in the harness (this is required to enable the proper power-up
sequence of the ECM). This can be routed into the passenger compartment with the accelerator pedal connector and diagnostic link connector.
Next, connect battery power (minimum 8 gauge wire) to the horizontal stud on the fuse relay center The other two studs are for accessories and
are 50 amp fused), and the harness installation is complete.
Additional features and bulkhead connector descriptions are also included below:
System Features
•
The Fuse/Relay center contains all required fuses and relays for proper engine operation. Spare fuse and relay openings are provided for
possible future customer use.
•
The Fuse/Relay center includes a malfunction indicator light (MIL) which will illuminate in the event of an engine fault code. See your GM
Performance Parts dealer to have this code retrieved at the diagnostic link connector in the fuse/relay center (using a Tech2 with GM
Performance Parts Diagnostics selection or 2006 – 2011 Cadillac CTS, 2006 – 2010 Corvette or 2010 – 2011 Camaro). Codes can also be
retrieved using an aftermarket diagnostic scan tool capable of reading this configuration. Note: that the MIL will illuminate when the
vehicle is keyed-up - this is normal, and it will go out once the engine is started if there are no current fault codes. A redundant MIL
wire is included in the wiring harness to allow a light to mounted inside the passenger compartment. The wire is located in the wire
bundle near the pedal connector and the ignition voltage.
•
A cooling fan is controlled by the ECM. Control is set to turn on a 12 V fan at 97 Deg C (207 Deg F) coolant temperature. The fan control
wire is fused/ relayed and must be connected directly to your fan.
•
The fuel pump is controlled by the ECM. The control wire supplies 12 V and is fused/relayed and should connect to the 12 V side of the
fuel pump.
•
A tachometer signal is included in the bulkhead connector (see below). This is a 2 pulse/rev output which may correspond to a 4-cylinder
setup in some tachometers or transmission controllers. Note the signal is a low voltage square wave, some tachometers or transmission
controllers may need a pull-up resistor in order to read the signal, similar to a 5000 ohm, ¼ watt resistor– this detail is left to the user.
The following circuit has worked for numerous devices – the resister value may need to be changed if your device does not read this
output properly.
BULKHEAD CONNECTOR PIN C
ENGINE SPEED – TACH OUT
BULKHEAD CONNECTOR PIN L
IGNITION VOLTAGE
DR-525 Series Crate Engine Control System
ALL INFORMATION WITHIN ABOVE
Date
BORDER TO BE PRINTED EXACTLY
31MY16
AS SHOWN ON 8.5 x 11 WHITE 16
POUND NON-BOND RECYCLABLE
02FE21
PAPER. PRINT ON BOTH SIDES,
EXCLUDING TEMPLATES. TO BE
03MY23
UNITIZED IN ACCORDANCE WITH
GMCCA SPECIFICATIONS.
AUXILIARY DEVICES
– 50 AMP
Revision
Init Rel – Blake Nye
Revision - Blake Nye
Revision - Blake Nye
PULL HIGH TACH OUT
PART No.
Rev 03MY23
19329244
Auth
DR
Installation Instructions
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DR-525 Series Crate Engine Control System
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