Oil light, pressure gauge and engine temp

[volturb40]

Hello i have an 88 GTE the oil light doesn't light up on the dash (bulb is ok) and the pressure gauge sits at 3/4 and doesn't move, could this all be linked to the pressure switch on engine block??

The only other thing is the temperture gauge sits just under 3/4 when running but hits red before the electric fan cuts in, it has just had a new coolant temperture sensor fitted, could the gauge be reading incorrectly???

Many thanks :)

[millworm]

Sound like it might have a dodgy earth or a faulty clockset?

[volturb40]

Sound like it might have a dodgy earth or a faulty clockset?

Thanks for that i started it today and the gauge flickered a few times but still stayed at 3/4 who knows :)