Thank you both for your replies. I am not sure this is the one I purchased :-http://www.ebay.co.uk/itm/OIL-PRESSURE-SWITCH-JEEP-ADA106603C-BY-BLUE-PRINT-/400752183051?pt=UK_CarsParts_Vehicles_CarParts_SM& fits=Car+Make%3AJeep|Model%3ACherokee|Cars+Year%3A 1995|Plat_Gen%3AXJ|Cars+Type%3A4.0i&hash=item5d4eb 1070b.

My jeep is a 1995 4.0Ltr model. Would you know what part number I am looking for so the gauge will work again?

Thanks in advance
Addy