Pro-Dash Input/Output Harness - 558-456 thermostats-and-parts 2007-2008 GMC Sierra 1500 w/

2007-2008 GMC Sierra 1500 w/ 4L70-E Transmission

5L V8 1972 - 1978 Mercury Marquis   460/7

5 Product Type Miscellaneous Exhaust Type of Component Header Reducer Warning California Proposition 65

Overall Length: 39

7 V8 2011 - 2012 Ram 3500 SLT 345/5

Pro-Dash Input/Output Harness - 558-456 thermostats-and-parts 2007-2008 GMC Sierra 1500 w/Overview: The 558 456 wiring kit is intended to fully populate all of the inputs and outputs for PNs 553 111 and 553 112 Pro Dashes. These can easily be inserted into the existing 34 pin dash connector. It contains loose wires and 2 and 3 conductor cable (jacketed but not shielded). The wire is 20 gauge TXL. There are TE Superseal pins crimped on every wire and cable. There are also extra pins that can be used (likely needed when using the jacketed