The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - How does the AC wiring harness enter the engine compartment?

**FirstOwner69** · 05-03-2014, 01:26 AM

Why couldn't have asked that about 20 hours ago? I'm now about 150 miles from my truck.

The wires do not come out through the evaporator case. They come through the firewall through the same grommet as the A/C vacuum limes as I recall. The hole is in the firewall to the right (when viewed the front) of the evaporator case near the top of the bell housing recess in the firewall at about 11:00. Here's a picture, but I don't think it'll help much. I don't know if you can see it, but on my computer it looks like there is a green pixel at the point where the vacuum hoses and wires come through the firewall. The wires are encased in a fabric loom and are strapped to the heater hoses through the engine compartment. If you look at the picture I posted yesterday in your thread "The Impossible Air Conditioning Connection" you can see that routing.

Edit: Added a zoomed in pic with showing the fabric loom routing to the compressor.

Hope this helps.

Jim

05-03-2014, 01:26 AM	#2
FirstOwner69 Senior Member Join Date: May 2010 Location: Wisconsin & Arizona Posts: 4,854	Re: How does the AC wiring harness enter the engine compartment? Why couldn't have asked that about 20 hours ago? I'm now about 150 miles from my truck. The wires do not come out through the evaporator case. They come through the firewall through the same grommet as the A/C vacuum limes as I recall. The hole is in the firewall to the right (when viewed the front) of the evaporator case near the top of the bell housing recess in the firewall at about 11:00. Here's a picture, but I don't think it'll help much. I don't know if you can see it, but on my computer it looks like there is a green pixel at the point where the vacuum hoses and wires come through the firewall. The wires are encased in a fabric loom and are strapped to the heater hoses through the engine compartment. If you look at the picture I posted yesterday in your thread "The Impossible Air Conditioning Connection" you can see that routing. Edit: Added a zoomed in pic with showing the fabric loom routing to the compressor. Hope this helps. Jim Attached Images Last edited by FirstOwner69; 05-03-2014 at 01:36 AM.