Fuel gauge intermittent return to full, low fuel lamp. Started with occasional flicker to full then return to normal about 12 months ago, gradually worsened with low fuel lamp on, then last week returned to normal for 1 week until 1/2 indicated then back to full and warning lamp. New sender located and ordered, wiring checked. Anything else to look for? Btw larger 40 gal aftermarket tank fitted, Australian RHD Holden Jackaroo equivalent.

 

You're extremely lucky you could source the parts 👍