Wiring!!! Fuel level gauge installed and partially calibrated. I didn’t take pictures of the process but this was how it went:
Setting the Existing Sender Type
1. The brown and black wires are used to set the sender type. The gauge ships pre-programmed to read GM 0-90 ohm senders.
If using a 0-90 ohm GM sender, separately insulate the ends of the brown and black wires with electrical tape, and coil them up
under the dash.
2. If any other sender type is required, connect a Radio Shack 275-1556 or equivalent momentary button to the black and brown
wires (see illustration above), or alternately touch the stripped ends of the black and brown wires to simulate pushing the button. 3. Press and hold the button, and apply power to the gauge. After 10 seconds, the display will momentarily display a number with a
dash on either side indicating the gauge is in sender select mode.
4. Allow the display to move to the appropriate number per the sender select chart (see next page), and release the push button.
The display can be incremented to the next position by momentarily pressing the button.
5. Remove power from the gauge to store the new sender type by turning off the ignition switch.
6. Re-apply power to the gauge, and confirm that it reads the proper fuel level. If the proper fuel level is not read, return to step 3
and repeat the sender select process. If the proper fuel level is still not indicated, perform a Custom Sender Calibration.
7. Remove power from the gauge by turning off the ignition switch.
8. Remove the momentary button if it was used, and tape the ends of the brown and black wires so they will not touch.
9. Coil the wires up under the dash.
The gauge is reading 10% after introducing 3.001 gallons (dammit) in the tank. I won’t be satisfied with the calibration until I see what it reads full.
Wideband installation next followed by wiring in the T56 Magnum harness and adding additional grounds to the electrical system.