Just got the whiteface Di Pricol Boost Gauge from Geno's Garage along with the Mopar OEM single "A"-Pillar trim mount from the SRT-10. Where's the best place to tap into for the guage lights? The dimmer switch itself, the wiring harness (don't have a manual so I don't know the wire color codes), etc. ? Is the illumination level correct (i. e. , matches the stock gauge lighting level) or are series resistors in order? The truck is an 04. 5. Any help would be greatly appreciated.