C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

93 blower motor wiring

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Old Nov 30, 2012 | 07:13 PM
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Default 93 blower motor wiring

Here is the problem that I have.
So I modified the stock engine harness for an LS swap I am finishing and made the mistake of getting rid of the connectors for the blower motor, resistor and related Item (relay maybe?). By the time I realized this I had already thrown way the old connectors and have no idea how the wiring is supposed to go. I am unable to find any information on this nor do I have a manual with wiring diagrams so could someone please run me in the right direction as to how all of that equipment was wired. I am starting the LS car soon and would like to keep the frost off the windows in the morning
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Old Nov 30, 2012 | 09:39 PM
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Originally Posted by Chad30021
Here is the problem that I have.
So I modified the stock engine harness for an LS swap I am finishing and made the mistake of getting rid of the connectors for the blower motor, resistor and related Item (relay maybe?). By the time I realized this I had already thrown way the old connectors and have no idea how the wiring is supposed to go. I am unable to find any information on this nor do I have a manual with wiring diagrams so could someone please run me in the right direction as to how all of that equipment was wired. I am starting the LS car soon and would like to keep the frost off the windows in the morning
Sorry I cant help, but can I ask how the swap went? Im looking at a similar one myself. What tranny did you use? Was it a bolt in, or modified? Any helpful hints? (Other than "dont throw away your old harness") Any pics would be cool too. Good luck! h
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Old Nov 30, 2012 | 10:20 PM
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Originally Posted by Chad30021
So I modified the stock engine harness for an LS swap
nor do I have a manual with wiring diagrams
Don't know how you could do it with out the factory diagrams?

For a 95 but should be similar


Last edited by vetteoz; Nov 30, 2012 at 10:22 PM.
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Old Nov 30, 2012 | 10:21 PM
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First question, did the car have a manual system or the C68 automatic system.
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Old Dec 1, 2012 | 05:16 PM
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Thanks for that picture! As for which system it has I'm not sure ill have to do some reading on the different systems. What's the significant distance between the 2? It is controlled electrically via the dash but I'm not sure which it is.
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Old Dec 1, 2012 | 09:45 PM
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Originally Posted by Chad30021
Thanks for that picture! As for which system it has I'm not sure ill have to do some reading on the different systems. What's the significant distance between the 2? It is controlled electrically via the dash but I'm not sure which it is.
The picture shown is for a automatic c68 system. It would have LEDs in the buttons and a auto button. The manual system has a slide handle for temperature and a 4 position rotory switch for the blower.

What do you have?
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Old Dec 1, 2012 | 10:56 PM
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I for sure then have the c68 system.
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Old Dec 2, 2012 | 11:37 AM
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The blower motor only has 2 wires. It connects to the blower motor control module which controlls the voltage to the motor. It is not a relay but a DC to DC controlled unit. It goes in the top of the evaperator case. This module is controlled by the programmer under the dash in center near gas pelal. It takes its commands from the control head with all the buttons on it via a bus.

I'm not really sure exactly what items you disposed of at this time. But sounds like it might be the blower module. If you did, there would be a hole in the case now.

There is no stand alone extenal resistor associated, so not sure what you mean?
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