Instrument cluster voltage regulator

You need to disable the internal one. I can't find the website (can't remember name LOL) there was one that showed a good "view" of things. One way is to leave everything "there" and stick a tiny insulator / silicone between the points of the original

Here we go........RTE

https://rt-eng.com/images/e/e7/InternalLimiterFixUsingIVR3.pdf

RTE Gauge Faq - rte