Another common cause of the instrument cluster not working properly is one or both of the ground(s). The older the car/van, the more likely you need to clean all connections. According to the diagram that I managed to get a copy of, the 13 pin connector that connects to the back of the instrument cluster has two pins (#7 and #13 that go to ground. The wires are Black/Light Green (# 7) and Black/Light Blue (#13). They both ground to the dash chassis, right hand side, behind the compartment that the cluster resides in. In my case, both the fuel and temperature gauges would sit at half way and none of the other gauges or LEDs worked. (BTW – it’s a 1996 T&C 3.8). One of the grounds is for the lights that light up the cluster via the dimmer switch. The other is for the total ground for the cluster. A good test is to hook an Ohm meter to the body chassis and then to both pins #13 and #7 and see if you have good connections. Even if that is not the root of the problem, going the extra mile to clean both connections is worth it and can often avoid future problems. Just my 2 cents worth. .