----Next was the instrument cluster. I connected this up on the bench and it took 21 photos to get these 2 shots showing the numbers lit up. This is indicating 800A current draw (or it should be when it is on the car).
----This is a closer shot. I was seeing loads of glare on the other shots, so I just deleted them. I fitted it all back up in the car and hey presto....... it didn't work! I had my foot on the brake and I eased the power in. I could see the current on my controller programmer tester display, but no change on the gauge. I disconnected the sensor and all 9 LEDs lit up. This was to be expected, so at least I could see the display circuit was working. I tried winding the adjustment screw to both extremes and still there was no display with the sensor connected. I checked the voltages at the connector and there was a problem. The supply was good for 5v at 5.03v, but the reference should be 2.5v and that was 5v and so was the signal sensed. I boxed it up again in the car , but I routed the wires so that I only needed to remove the panel by my feet to get to the circuit and all the connections. Tomorrow I shall investigate what is going on with the sensor side. The only other thing I could think of was that the wire insulation and the plastic pipe were blocking the magnetic fields? I shall get the right voltages first then I might change the mount to 22mm copper pipe and put it in the power circuit to get better sensing.
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