X276 Instrument Panel Harness to Instrument Panel Extension Harness

WARNING: This page is about a different car, the 2018 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of GENERAL MOTORS COMPANY	Courtesy of GENERAL MOTORS COMPANY
Connector Part Information Harness Type: Instrument Panel OEM Connector: 13503526 Service Connector: 13503528 Description: 12-Way F 1.5 Series, Sealed (BK)	Connector Part Information Harness Type: Instrument Panel Extension OEM Connector: 13503540 Service Connector: Service by Harness - See Part Catalog Description: 12-Way M 150 MX Series, Sealed (BK)

Terminal Part Information

Terminal Type ID	Terminated Lead	Diagnostic Test Probe	Terminal Removal Tool	Service Terminal	Tray Name	Core Crimp	Insulation Crimp
I	19300635	J-35616-2A (GY)	J-38125-217	Not Available	Not Available	Not Available	Not Available
II	Not Required	J-35616-3 (GY)	No Tool Required	Not Required	Not Required	Not Required	Not Required

Pin	Size	Color	Circuit	Terminal Type ID	Option	Function	Pin	Size	Color	Circuit	Terminal Type ID	Option
1	0.5	RD/GN	3140	I	IOT+LT4/UQT-MAW	Battery Positive Voltage	1	0.5	RD/GN	3140	II	UQT
2	0.35	GY/GN	1102	I	-	Low Speed GMLAN Serial Data #2	2	0.5	GY/GN	1102	II	UQT
3	0.35	WH/BU	5986	I	-	Serial Data Communication Enable	3	0.35	WH/BU	5986	II	UQT
4	0.35	BU/GN	1304	I	-	High Speed GMLAN Serial Data (+)9	4	0.5	BU/GN	1304	II	UQT
5	0.35	WH/GN	1305	I	-	High Speed GMLAN Serial Data (-)9	5	0.5	WH/GN	1305	II	UQT
6 - 7	-	-	-	-	-	Not Occupied	6 - 7	-	-	-	-	-
8	0.35	GN/WH	7527	I	-	Local Interconnect Network Serial Data Bus 5	8	0.35	GN/WH	7527	II	UQT
9 - 11	-	-	-	-	-	Not Occupied	9 - 11	-	-	-	-	-
12	0.5	BK/WH	1551	I	IOT+LT4/UQT-MAW	Signal Ground	12	0.5	BK/WH	1551	II	UQT