Got A SS Posted February 5, 2005 Report Share Posted February 5, 2005 Ok. I bought a brake controller and wiring harness today. All the posts I have searched say be careful not to use the older harness as it's wired different. Mine does not list a year on it so I don't know if it's older or not. What sequence do the wires go in on the correct plug? Link to comment Share on other sites More sharing options...
Xero Posted February 6, 2005 Report Share Posted February 6, 2005 if i remember correctly from 03 to the 04 model year the wireing got changed...but i think (but dont remember) from 99-03 the wireing is the same? tell me if im wrong but i do believe im right Link to comment Share on other sites More sharing options...
d_a_n_payne Posted February 6, 2005 Report Share Posted February 6, 2005 your wrong I dont have a clue what im talking about Link to comment Share on other sites More sharing options...
DaGeorge Posted February 6, 2005 Report Share Posted February 6, 2005 Did your SS come with the tow package . If so you should have got the harness with the truck, and the wiring is labled on the harness. Link to comment Share on other sites More sharing options...
zippy Posted February 6, 2005 Report Share Posted February 6, 2005 ok guys, here you go: The 1999 though early 2003 wiring harness jumper that plugs into the relay block will have a reddish/brown 6-way connector and a tag with the last four digits of the wiring harness part number. Second design 2003 may have a white plastic connector with part number 5418 as well. The 1999 jumper is/was P/N 12171982 with a pink/purple tag identifier of 1982. This number has been superseded to 15366255, with a pink/purple tag identifier of 6255. The 2000 jumper harness is P/N 15366255. The pink/purple tag identifier is 6255. The 2001-2002 jumper is P/N 15086884. The orange tag identifier is 6884. The 2003 jumper is P/N 15085418. The orange tag identifier is 5418. When transferring the brake controller with the wiring jumper attached from a 2001-2002 vehicle to a 2003 vehicle, a change to the jumper harness connector must be performed. The following information is for the 1999-2002 wiring harnesses. Pin Wire Color Circuit Number Function A LT BLUE 1620 Stop lamps B RED 142 Brake controller 12 volt source C DK BLUE 47 Brake Controller output (Trailer Brakes) D BROWN 2409 Brake controller illumination E -- -- -- F BLACK 1850 Ground The following information is for the 2003 wiring harness. Pin Wire Color Circuit Number Function A BROWN 2409 Brake controller illumination B RED 242 Brake controller 12 volt source C DK BLUE 47 Brake Controller output (Trailer Brakes) D LT BLUE 1620 Stop Lamps E -- -- -- F BLACK 1850 Ground To modify a 12171982, 15366255 or 15086884 harness for use in a 2003 vehicle, switch the wires in cavities "A" and "D". To modify a 15085418 harness for use in a 1999-2002 vehicle (see model list at the front of this bulletin for applicable models), switch the wires in cavities "A" and "D". Link to comment Share on other sites More sharing options...
d_a_n_payne Posted February 6, 2005 Report Share Posted February 6, 2005 What does this modifying do? Link to comment Share on other sites More sharing options...
STreat Posted June 26, 2013 Report Share Posted June 26, 2013 Hello Im wiring a brake controller to my 03 SS on the GM wire harness theres a brown wire thats labeled Brake Controller Illumination. The Controller is a Tekonsha Prodigy. I cant seem to figure what that is and where to wire it to... Anyone know? Please help Link to comment Share on other sites More sharing options...
70chevy03ss Posted June 26, 2013 Report Share Posted June 26, 2013 Your best bet go on ebay and buy the harness for your truck. I had to buy one for my truck it plugged under the dash into the box and I was done. I didn't use the factory or they gave me! Only cost 15 buck ad shipping was super fast! Link to comment Share on other sites More sharing options...
chawkins6789 Posted June 26, 2013 Report Share Posted June 26, 2013 I bought my harness from Tekonsha with my P3 so it was all plug and play Link to comment Share on other sites More sharing options...
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