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Could someone tell me where the hold/engage wires (brown/white) plug into at the other end of the transducer. Trying to figure out why they were wrapped up into the harness and not plugged in.
when I removed the cruise harness I found the wires just sitting wrapped up, not even a plug on the end of them, just the pin/terminals.
Don't get me wrong, I'm willing to help you or others anyway I can as long as a little effort is shown in return...
Not sure what wires your taking about.
Earlier you said you have a functional Cruise Control System.
I provided a drawing in a previous post of yours.
The complete Cruise Control wiring diagram is included in the 1977 Corvette Electrical Troubleshooting Manual.
About now this is the best dam manual you can have for your 1977.
E-Bay Link:https://www.ebay.com/sch/i.html?_fro...anual&_sacat=0
Thank You for the photo
Can you print out the diagram I provided in your other post of the Cruise Circuit so we can be on the same page when troubleshooting this?
What I see in that photo is a pile of wiring in the background, a 2 wire connector, and 2 wires and crimp connectors your holding in your hand?. I can only assume without you telling me what the wire colors are...
There is more to this harness your not showing.
Open this Lectric Limited Link, this is what the complete Cruise Control Harness looks like for the 1977 Corvette. LINK:https://www.lectriclimited.com/cruis...harness-108374
The Pink Wire(s) are the power circuit from Gauges Fuse, one end plugs into the Fuse Panel Socket IGN.
The Pink & Red wires of the black connector connect to your Stop Lamp Switch...
The Black, Blue & Brown wires are C141 (C=Connector) that plugs into the column Cruise Switch.
The White & Brown wires at 2 wire connector is at the transducer, but you figured that out.
Take a photo of the cruise control switch (Tilt Lever) and one of the connector, it should be a small flat 3 wire male connector.
Also, take a photo of the transducer and servo in the engine compartment if you can.
What I think you’re seeing there is the long loops of brown wire GM used to get the 40 ohms of resistance between the engage button and the transducer.
What I think you’re seeing there is the long loops of brown wire GM used to get the 40 ohms of resistance between the engage button and the transducer.
I read that somewhere else too. Could you tell me the purpose of that bundle? And how it create a signal if it plugs into the transducer but no where else? Are the two ends supposed to just be two terminals?
[QUOTE=dmallen95;1606198235]I read that somewhere else too. Could you tell me the purpose of that bundle? And how it create a signal if it plugs into the transducer but no where else? Are the two ends supposed to just be two terminals?[/QUOTE
"If" you're not real careful here you're going to short out your 1 year only cruise lever switch.
The purpose of the resistor wire is outlined in the circuit operation of the diagram I posted in your other thread.
Your missing a 3 wire connector housing, that housing part number is #2989914.
It may make more scene to you if you put this diagram along side the other to connect the dots,,,
The numbers you see in the connector boxes, example 139 or 959 or 916 or 917 are Circuit Numbers.
In general, you can usually match a wire color to a circuit number to trace it's path from point A to B
This is from the GM manual. Maybe a different view will help. Ignore the references to the Cruise Lamp - Corvettes didn't have a cruise indicator on the dash as other GM cars did:
If you are unsuccessful in finding that 3 wire connector housing the connector people have them in stock at 0.176 cents each...
Problem is a minimum order of 55 required.
I read that somewhere else too. Could you tell me the purpose of that bundle? And how it create a signal if it plugs into the transducer but no where else? Are the two ends supposed to just be two terminals?[/QUOTE
"If" you're not real careful here you're going to short out your 1 year only cruise lever switch.
The purpose of the resistor wire is outlined in the circuit operation of the diagram I posted in your other thread.
Your missing a 3 wire connector housing, that housing part number is #2989914.
It may make more scene to you if you put this diagram along side the other to connect the dots,,,
The numbers you see in the connector boxes, example 139 or 959 or 916 or 917 are Circuit Numbers.
In general, you can usually match a wire color to a circuit number to trace it's path from point A to B
I have a question for you, if I cutted the loop on the brown wire, can I add a 40 ohm resistor to compensate that. I was wondering since I already cut the wire, I don't know if I will have to get a new wiring hardness.
I have a question for you, if I cutted the loop on the brown wire, can I add a 40 ohm resistor to compensate that. I was wondering since I already cut the wire, I don't know if I will have to get a new wiring hardness.
A 40ohms resistor comes in a multitude of wattages...
You would have to know what the load (Wattage) of the Transducers Coil... Can't be much
If you look at the drawing below you will see the resistor wire was used on the HOLD circuit...
The reason for the resistor wire is to create enough load so the Transducers coil stays energized, it's like a LATCH...
If you do the math of the resistance of the Transducers coil it should get you in the ballpark...
Here is an example: A 12VDC coil with a resistance of 100ohms would draw 0.12 amps and consume 1.44 watts...
A 40ohms resistor comes in a multitude of wattages...
You would have to know what the load (Wattage) of the Transducers Coil... Can't be much
If you look at the drawing below you will see the resistor wire was used on the HOLD circuit...
The reason for the resistor wire is to create enough load so the Transducers coil stays energized, it's like a LATCH...
If you do the math of the resistance of the Transducers coil it should get you in the ballpark...
Here is an example: A 12VDC coil with a resistance of 100ohms would draw 0.12 amps and consume 1.44 watts...
Thank you so much I will do the math but to be safe I probably will replace the cruise control hardness
Cruise Control Wiring
