[rt400]

Advice appreciated. 1968 GTO with factory gauges. When turn signal is on, oil pressure and water temp gauge needles flicker with the blinking of flasher?
Thanks in advance.

[JSchmitz]

Sounds like a bad ground.

[1969GiPper]

Originally Posted by rt400

Advice appreciated. 1968 GTO with factory gauges. When turn signal is on, oil pressure and water temp gauge needles flicker with the blinking of flasher?
Thanks in advance.

When you say “with factory gauges” do you mean the gauges were installed at the factory or someone installed factory gauges to replace factory warning lights?

I ask this because converting warning lights to gauges requires a couple of changes to the wiring harness.

[OG68]

Ground straps for a 68 gauge panel

[Greg Reid]

Boy, that's a might pretty instrument panel Ed!

[rt400]

1969GiPper
They are factory installed gauges. Thanks

[OG68]

Originally Posted by Greg Reid

Boy, that's a might pretty instrument panel Ed!

Courtesy of Pete Serio.

[Vid]

Easy fix, just drive like 99% of the population and don’t use turn signals! Haha sorry but you left the door open for that joke


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[north]

It is a ground issue but I find some cars will still have the gauges bounce (and shift when lights are on) even if you have good cluster case grounding, maybe also a ground problem in the printed circuit itself or even the gauges themself.