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Old 06-20-2013, 03:37 PM   #16

Drives: 2014 CTS-V Coupe
Join Date: May 2013
Location: DFW, TX
Posts: 1,037
It requires a harness to go from non 4 guage pack to 4 guage pack. If he includes the wiring harness that connects to the back of the gauges it should be fine.
2014 CTS-V... with some go-fast bits coming
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