Smaller light green wire on top, larger dark green wire in the middle & black on the bottom. If good so far then pull the middle & bottom wires, make sure the black one has continuity to ground & touch them together & with the key on try all 4 speeds at the speed switch.. Here are some Jeep JL Wrangler wiring diagrams, hope this helps out the community. Each of the diagrams are in PDF. To download a zip of all diagrams;. CABIN HEATER SYSTEM - Wiring Diagram CAN C BUS LAYOUT - Wiring Diagram CAN C BUS SYSTEM - Wiring Diagram CAN IHS BUS LAYOUT - Wiring Diagram
This wiring diagram manual has been prepared to provide information on the electrical system of the Jeep Wrangler (2018+), with 2.0L / 2.2L / 3.0L… 2019 Jeep Wrangler (JL) L4-2.0L Turbo System Wiring Diagrams. Jeep Wrangler Forums. TJ Wrangler Technical Forum TJ HVAC Schematic. Jump to Latest. 120 posts · Joined 2002 Add to quote; Only show this user #1. Below are the wiring diagrams for the HVAC systems. First a '98, then a '99. Follow the 2 wires from the motor in each. Note on the '98 (also the '97s) the ground wire goes directly to ground.