The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Fuel gauge, front fender marking lights quit working after new cluster installed

ray_mcavoy · 01-19-2023, 07:27 PM

No, you don't need to (or want to) add any wires connecting the unused printed circuit tabs for the temp gauge or ammeter. Doing so would create a short circuit and likely burn up traces on the printed circuit.

Like pjmoreland said, the fuel gauge gets it's power directly from pin 3. The printed circuit does have a branch of that trace that also powers the temp gauge. But the circuit does not run through the temp gauge. So not having a factory temp gauge hooked up won't prevent the fuel gauge from working.

Also, double check the terminals that you re-pinned on the cluster plug. It's possible that a terminal didn't get latched securely into the connector, allowing it to pop back out when you plugged the connector back into the cluster.

01-19-2023, 07:27 PM	#4
ray_mcavoy Registered User Join Date: Nov 2009 Location: Sherman, ME Posts: 2,354	Re: Fuel gauge, front fender marking lights quit working after new cluster installed No, you don't need to (or want to) add any wires connecting the unused printed circuit tabs for the temp gauge or ammeter. Doing so would create a short circuit and likely burn up traces on the printed circuit. Like pjmoreland said, the fuel gauge gets it's power directly from pin 3. The printed circuit does have a branch of that trace that also powers the temp gauge. But the circuit does not run through the temp gauge. So not having a factory temp gauge hooked up won't prevent the fuel gauge from working. Also, double check the terminals that you re-pinned on the cluster plug. It's possible that a terminal didn't get latched securely into the connector, allowing it to pop back out when you plugged the connector back into the cluster.