upgrading regulator

Hi All, been a while, busy summer. won't waste time here, but thanks to all for your previous help, finally seeing light at the end of the tunnel.
so, question: in the diagram below, is it alright to splice (so to speak) the blue and the blue with white tracer at the connection at the ballast resistor? thanks in advance, you all have been a GREAT help, the still learning electrical dummy :)
upload_2018-8-30_16-4-53.png