Hi folks, i installed a set of blue led's from led monster to a stunning result in the mfd and speedo etc, however only problem i came across i could not get the mileage to go blue, i thought i'd put it in the wrong way so turned it 180 but still the same? is there a filter i need to remove to get it blue? i had the whole unit stripped as far as i thought i could go, right down to the electrical board and dials.

any info much appreciated