Engine Harness w/AC Option - Team Camaro Tech
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post #1 of 3 (permalink) Old Sep 12th, 18, 07:52 PM Thread Starter
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Larry
 
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Engine Harness w/AC Option

Question about the two different wires that power the heater blower motor on a 69 Camaro, (and maybe 67 and 68's).


On cars w/AC the blower wire is purple and is part of the AC harness that comes through the firewall inboard of the evaporator case.


On non-AC cars the wire is orange and is part of the engine harness.


So, when a car is ordered with AC, what happens to the orange wire? Since repro engine harnesses don't specify with or without AC, I'm gonna guess that the orange wire is still with the engine harness but there is no orange wire in the dash harness that would connect to the now empty cavity in the junction block connector.

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post #2 of 3 (permalink) Old Sep 13th, 18, 05:05 AM
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Brian
 
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Re: Engine Harness w/AC Option

Not 100% sure if it is reused elsewhere in an a/c car, but GM standard practice in situations such as this is that the unused connector, or wires are just capped and tapped up the the rest of the harness under normal practice. If reused it can be unbundled and re-routed to a new location. My memory thinks it is just taped to the harness under the dash but the knowledgeable A/C guys here will correct me if I'm wrong on this


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post #3 of 3 (permalink) Old Sep 13th, 18, 05:31 PM Thread Starter
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Larry
 
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Re: Engine Harness w/AC Option

You know, I saw this type of procedure in the AIM years ago. It's in RPO U16, tachometer and U17, console gauges. The brown wire supplying power to the fan speed switch is removed from the connector and connected to the AC harness brown wire. The resistor connector is cut off and the old fan connector is pulled from the harness along with the wires to the resistor connector.

Don't know what that procedure has to do with the U16 and U17 options... You think it would be with the C60 AC RPO instructions although it does show the loose brown wire being connected to the brown wire for the fan connector in the AC harness.

Complicated to say the least...

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