pressure isolator

[Tx_Atty]

I have determined my autometer pressure isolator is the POS I suspected. Despite their salesman telling me it would work with diesel, it has failed and sends no signal to the guage.

Does anyone have a pressure isolator you have used for more than one year successfully? the pressure guage is fairly useless under the hood.

Im looking for brand and model suggestions (no more autometer for me).

Thanks!