1977 wiper/dimmer/signal switch
Thread Starter
Instructor
Joined: Jun 2014
Posts: 160
Likes: 25
From: Prior Lake Minnesota
1977 wiper/dimmer/signal switch
the switch in this ebay post is pretty much identical to the original. you will have to drill out the pivot to fit the shoulder bolt. also trace the wiring as you will have to move one wire to match the original harness.
ebay.com/itm/New-1978-79-Chevette-Windshield-Wiper-Turn-Signal-Switch-w-Dimmer-Pivot-7827386-/221429602637?hash=item338e3b994d:g:ThkAA OxyBjBTRrWw&vxp=mtr&rmvSB=true
just finished installing and it works perfectly.
gm part number 7827386 form a 78/79 chevette.
Jim
ebay.com/itm/New-1978-79-Chevette-Windshield-Wiper-Turn-Signal-Switch-w-Dimmer-Pivot-7827386-/221429602637?hash=item338e3b994d:g:ThkAA OxyBjBTRrWw&vxp=mtr&rmvSB=true
just finished installing and it works perfectly.
gm part number 7827386 form a 78/79 chevette.
Jim
Thread Starter
Instructor
Joined: Jun 2014
Posts: 160
Likes: 25
From: Prior Lake Minnesota
You will need to drill out the large end of the casting to fit the shoulder bolt. I used 11/32.
You will also need to take the black wire that comes from the white plastic base of the switch, and move it from the D slot and splice it to the white wire so both are in the C slot on the connector. Make sure to carefully trace the wires on both switches to make sure you've got the correct wires.
I couldn't get pictures to post but I will e-mail them to any one who asks for them.
Jim
You will also need to take the black wire that comes from the white plastic base of the switch, and move it from the D slot and splice it to the white wire so both are in the C slot on the connector. Make sure to carefully trace the wires on both switches to make sure you've got the correct wires.
I couldn't get pictures to post but I will e-mail them to any one who asks for them.
Jim
Last edited by jimbo8125; Nov 2, 2015 at 09:22 PM.
1st Gear
Joined: Apr 2016
Posts: 1
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From: Hasselt
is it also possible to replace this windshied wiper switch by a switch from a earlier or later version? If I connect the wipers to the electric system, they will stay going on. I can only stop them by holding the lever in a certain position.
Thread Starter
Instructor
Joined: Jun 2014
Posts: 160
Likes: 25
From: Prior Lake Minnesota
Arnoud you can change how you operate the wipers to a dash mounted switch but I think modifying the one I used would be easier and you would not be changing your dash. Bought on E_BAY from micksrummagesale.
1st Gear
Joined: Nov 2025
Posts: 1
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I just read your post on changing this switch on my 1977 vette, do you have any pictures of the switch? My email is msizemo@gmail.com
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Safety Car
Joined: Oct 2007
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From: Seattle Area Washington
I just read your post on changing this switch on my 1977 vette, do you have any pictures of the switch? My email is msizemo@gmail.com
And what seems to be broken on your switch?
The switch portion of the switch is real simple in design, it's a 3 position rocker switch with simple brass contacts...
If it is a broken pivot bracket on a T&T column I can get you some GM part numbers.
Many different GM models used the same pivot bracket that with a simple modification can be switched out and used on your 77.
The GM #78273386 switch used above is also very hard to find nowadays...
The original 77 Wiper/Washer switch for a T&T column was GM #7827152
The 386 switch as stated above does need 2 simple modifications...
Physically, the 386 & 152 switches look the same at first glance...
Here are a few angles of a 7827152 switch...
The pivot bracket on the switch in my photo is of first design, later GM made the pivot bracket stronger by eliminating several cutouts when the bracket was cast...
Newer style pivot bracket(s)
