Originally posted by mrfreshnklean
Can I splice into the grey interior light wire to power the sunpro gauges? If it can power everything, will the other guages dim with the stock ones?
I have always been successful splicing into a factory gauge light wire. And yes, they will dim with the factory gauges. If your Sunpro gauges are electric, you need to be sure the grounds for the lights and gauges are separated. I learned from experience that if all are tied together and ground to the same spot, when your lights are on, it will affect the reading on the gauge (Example: it may read higher or lower than actual temp).
As requested by jimfulco; to better clarify your answer, the car make, model and year would be helpful.