In this post from august of 2013 I talk about this some. <a href="http://thecareandfeedingofponies.blogspot.com/2013/08/instrument-cluster-voltage-regulator.htmlIn">http://thecareandfeedingofponies.blogspot.com/2013/08/instrument-cluster-voltage-regulator.htmlIn</a> that post is a link to a person that makes extremely reliable instrument cluster voltage regulators.