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TECHNICAL

Wiring an orignal 737 Engine APU Fire Control Panel

Wire Color Chart:

Wire ColorDescription / Function
OrangeBright/Dim Power
WhiteGround Return
BlueOutputs
VioletMaster Test
Red Input Logic Power
GreenInputs
Yellow5v Lighting
White / Yellow Tracer5v Lighting Return

Wire the Multi-Connection Terminal Strip

Layout the wires from the terminal strip to there approximate location.

Next add the Blue Output wires and the Green Input wires to the harness.

The Korry indicators have been wired into the harness.

The Switch Inputs are wired and the lightplates power are connected to the harness.

The orignal interface connector socket is wired.

The completed 737 Engine & APU Fire Panel with Page Aerospace Fire Handles installed.

ERROR - Sometimes things don't work out.
I forgot to wire the Master Test Function to the three Extinguisher Squib circuit test lamps
I am using hardware instead of software for the control of the Master Test Function,
Therefore I needed to add three diodes to control the Extinguisher Squib circuit test lamps.
So here are the diodes installed and the proper results during master test.
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Page last updated on June 1, 2008
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