4+3 overdrive turn on voltage?
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Joined: Feb 2001
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From: Galveston... well, Santa Fe Texas
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St. Donor '03 & '06
4+3 overdrive turn on voltage?
Ok... So it's an 84 that had been carb'd, ecm is gone.
I rewired the overdrive switch.
Here is the wiring I'm looking at
What I had done was run a new wire from the connector on the side of the od case(solenoid) to a SPST switch, then another wire from a fused +12vdc... Flip the switch, 12v goes to the soenoid and the the OD is activated.
I then cut the wires coming off the first gear switch, and spliced the switch into my new circuit. Today, I moved over to the stock switch on the console, and I spliced in the original green wire still that I'll have the dash indicator light.
Basically, in the above diagram, remove the relay, and put +12vdc to the blue wire and that's my setup.
Now the dash indicator light is on if the switch is on, and if I put the car in first, the light stays on. Is that normal, our could my first great switch be faulty? If so can I just replace it with the second or forth gear switch?
I rewired the overdrive switch.
Here is the wiring I'm looking at
What I had done was run a new wire from the connector on the side of the od case(solenoid) to a SPST switch, then another wire from a fused +12vdc... Flip the switch, 12v goes to the soenoid and the the OD is activated.
I then cut the wires coming off the first gear switch, and spliced the switch into my new circuit. Today, I moved over to the stock switch on the console, and I spliced in the original green wire still that I'll have the dash indicator light.
Basically, in the above diagram, remove the relay, and put +12vdc to the blue wire and that's my setup.
Now the dash indicator light is on if the switch is on, and if I put the car in first, the light stays on. Is that normal, our could my first great switch be faulty? If so can I just replace it with the second or forth gear switch?
Safety Car
Joined: Jan 2004
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You would have to put a DVM on the switches to select the correct one as it appears they are opposites ; on is NC and the other is NO
Thread Starter
Team Owner
Joined: Feb 2001
Posts: 21,016
Likes: 0
From: Galveston... well, Santa Fe Texas
Cruise-In VII Veteran
St. Donor '03 & '06
I think I figured out.
I put the first gear switch between the solenoid and the switch.
So the there is nothing interrupting the light circuit except the on/off switch.
I put the first gear switch between the solenoid and the switch.
So the there is nothing interrupting the light circuit except the on/off switch.
Last edited by MonteHall; Sep 9, 2012 at 11:53 AM.
Le Mans Master
Joined: Sep 2006
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From: Phoenix AZ
2021 C4 of the Year - Modified Finalist
I put a 4+3 in my 57 chevy truck.
I used a relay off of the ignition switch to arm the engage relay, then used the engage relay to turn on the trans.
I used a rocker switch so I don't have to look at the switch to find out if it's on or off.
The engage relay goes through the first gear lock-out switch and then the first gear switch has a wire that goes to the trans overdrive connector.
works slick.
Been that way for about 3 or 4 years.
light? what light?
I used a relay off of the ignition switch to arm the engage relay, then used the engage relay to turn on the trans.
I used a rocker switch so I don't have to look at the switch to find out if it's on or off.
The engage relay goes through the first gear lock-out switch and then the first gear switch has a wire that goes to the trans overdrive connector.
works slick.
Been that way for about 3 or 4 years.
light? what light?
