Anyone have an electrical schematic for a 6.5L diesel/99 Suburban? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**DeadheadNM** · 10-20-2021, 11:42 AM

I’m slowly unwinding all the electrical changes made to my 99 Suburban 6.5L diesel that was formerly operated by a municipal fire department.

This relay appears spliced into an engine harness bundle at one end and the passenger side battery at the other end (red wire with an in-line fuse). The truck dies if this wire is removed at the battery. At the harness end it looks like a red harness wire was cut and spliced to the blue and yellow wires from the relay.

Does anyone have an electrical schematic for a 6.5L diesel that will help me ID the cut red wire on the harness?

10-20-2021, 11:42 AM	#1
DeadheadNM Carpe manana Join Date: Dec 2010 Location: Eau Claire, WI Posts: 12,310	Anyone have an electrical schematic for a 6.5L diesel/99 Suburban? I’m slowly unwinding all the electrical changes made to my 99 Suburban 6.5L diesel that was formerly operated by a municipal fire department. This relay appears spliced into an engine harness bundle at one end and the passenger side battery at the other end (red wire with an in-line fuse). The truck dies if this wire is removed at the battery. At the harness end it looks like a red harness wire was cut and spliced to the blue and yellow wires from the relay. Does anyone have an electrical schematic for a 6.5L diesel that will help me ID the cut red wire on the harness? Attached Images __________________ 1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547 1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308 Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.