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Username Post: 51 turn signal switch and wiring question        (Topic#311959)
52 deluxe 
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Posts: 253
52 deluxe
Age: 36
Loc: prairie du chien wi
Reg: 03-09-13
05-25-14 06:04 PM - Post#2455886    

Can anyone tell if a stock gm turn signal switch and wiring has 1 or 2 wires from the switch to the rear turn signal indicators?
Using an ohm meter I found where every other wire goes except the left(or was it right) rear turn signal. I have 1 wire that I can't seem to find where it goes. I have read many threads and looked at the wiring diagram from the accessory installation manual.

I took all the wiring and switch from my 51 parts car. And I'm installing it in my 52. It must have been installed at the dealer as it has all the correct wade terminals and the accessory power junction block that bolts to the inside of the firewall access cover. (that the voltage regulator bolts to) My 52 had a 53 steering wheel and turn signal Installed poorly, but it worked.

The one wire I can't seem to figure out where it goes was hooked to a wire off of the factory bundle of wires directly behind the gauges.




 


lobucrod 
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Posts: 661
lobucrod
Age: 67
Loc: Slaton, TX
Reg: 10-01-07
05-26-14 06:42 AM - Post#2456002    
    In response to 52 deluxe

  • 52 deluxe Said:
Can anyone tell if a stock gm turn signal switch and wiring has 1 or 2 wires from the switch to the rear turn signal indicators?
Using an ohm meter I found where every other wire goes except the left(or was it right) rear turn signal. I have 1 wire that I can't seem to find where it goes. I have read many threads and looked at the wiring diagram from the accessory installation manual.

I took all the wiring and switch from my 51 parts car. And I'm installing it in my 52. It must have been installed at the dealer as it has all the correct wade terminals and the accessory power junction block that bolts to the inside of the firewall access cover. (that the voltage regulator bolts to) My 52 had a 53 steering wheel and turn signal Installed poorly, but it worked.

The one wire I can't seem to figure out where it goes was hooked to a wire off of the factory bundle of wires directly behind the gauges.




The switch will have two wires going to the rear turn signals, one for each side. There will be two other wires going to the front turn signals. You will also have one hot lead from the flasher and one from the brake light switch.


'38 Chevy Coupe Gasser 409 powered
'50 Sedan Delivery 401 Nailhead powered
'62 Buick Electra original survivor


 
RAM_51 
"3rd Year" Silver Supporting Member
Posts: 5506
RAM_51
Loc: Yakima, WA. USA
Reg: 12-28-02
05-26-14 07:21 AM - Post#2456013    
    In response to 52 deluxe

I think the diagram below explains where every wire would go from an original accessory [COLE] switch. There would be:

2 wires to the rear lights
2 to the front
1 to the flasher/power unit
1 that goes to the stop light switch which is jumped to the the extreme left and right terminal of the switch itself.
1 wire would return from the flasher/power unit to the body of the switch and is for the turn indicator bulb.

There should be 7 wires in the harness.



1951 Fleetline Preservation
'51 Fleetline DeLuxe 2 DOOR SEDAN (Fathom Green)
'51 Styleline Special BUSINESS COUPE (Shadow Gray)
'53 6500 Dump Bed (Oxidized Red)
'50 Styleline DeLuxe 4 DOOR SEDAN (Mist Green)


 
52 deluxe 
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52 deluxe
Age: 36
Loc: prairie du chien wi
Reg: 03-09-13
05-26-14 07:47 AM - Post#2456017    
    In response to RAM_51

In the top right hand corner it says "wire in body...." Where is this wire ? Does that mean it is already part of the factorys main wire harness?

This is the wire that has me confused.



 
RAM_51 
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RAM_51
Loc: Yakima, WA. USA
Reg: 12-28-02
05-26-14 07:55 AM - Post#2456021    
    In response to 52 deluxe

  • 52 deluxe Said:
Does that mean it is already part of the factorys main wire harness?


That is correct. Look at FIG. 187. That particular wire is part of the body wire harness and runs up the "A" pillar and back to the trunk area.



1951 Fleetline Preservation
'51 Fleetline DeLuxe 2 DOOR SEDAN (Fathom Green)
'51 Styleline Special BUSINESS COUPE (Shadow Gray)
'53 6500 Dump Bed (Oxidized Red)
'50 Styleline DeLuxe 4 DOOR SEDAN (Mist Green)


 
52 deluxe 
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52 deluxe
Age: 36
Loc: prairie du chien wi
Reg: 03-09-13
05-26-14 09:56 AM - Post#2456042    
    In response to RAM_51

Got it figures out! Thank you! One last question.. how does the wire connect to the stop lamp switch? It's the natural colored one. It had a wade connector that connected under the dash to a wire coming from a factory taped/wrapped harness directly behind the gauge cluster.



 
RAM_51 
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RAM_51
Loc: Yakima, WA. USA
Reg: 12-28-02
05-26-14 10:49 AM - Post#2456054    
    In response to 52 deluxe

  • 52 deluxe Said:
how does the wire connect to the stop lamp switch?


If you are mixing and matching older installations, you may run into stripped wires, wires without connectors, to say nothing of faded color coded wires etc. I believe the original installation kit [see photo below] had all of the needed connectors and wire ends provided and installation was fairly straight forward.






About the only thing I can do is refer you to Figure 185 below. You may need to resort to small wire nuts or whatever it takes to make the needed splices etc. Not sure if that answers your question or not.



1951 Fleetline Preservation
'51 Fleetline DeLuxe 2 DOOR SEDAN (Fathom Green)
'51 Styleline Special BUSINESS COUPE (Shadow Gray)
'53 6500 Dump Bed (Oxidized Red)
'50 Styleline DeLuxe 4 DOOR SEDAN (Mist Green)


 
52 deluxe 
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52 deluxe
Age: 36
Loc: prairie du chien wi
Reg: 03-09-13
05-26-14 11:05 AM - Post#2456060    
    In response to RAM_51

Referring to the illustration 185 on the left side, the wiring from the stop lamp switch. It appears that I should have a wade connector installed from the factory in the harness just hanging back there ready to accept the wiring for the turn signal switch stop lamp wire. Would you agree?



 
RAM_51 
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RAM_51
Loc: Yakima, WA. USA
Reg: 12-28-02
05-26-14 11:19 AM - Post#2456063    
    In response to 52 deluxe

  • 52 deluxe Said:
It appears that I should have a wade connector installed from the factory in the harness just hanging back there ready to accept the wiring for the turn signal switch stop lamp wire. Would you agree?


I agree that the illustration may appear that way but that is incorrect. The connection would have gone straight across in the diagram from left to right. In other words, from the factory and without the accessory turn signal installed the NAT. WITH BLACK & GREEN CROSS TRACER from the HARNESS BACK INSTRUMENT PANEL-LEFT SIDE, would have connected directly to the TO R.H. LAMP WIRE. Starting to make sense?


1951 Fleetline Preservation
'51 Fleetline DeLuxe 2 DOOR SEDAN (Fathom Green)
'51 Styleline Special BUSINESS COUPE (Shadow Gray)
'53 6500 Dump Bed (Oxidized Red)
'50 Styleline DeLuxe 4 DOOR SEDAN (Mist Green)


 
kensluys 
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kensluys
Loc: Bellingham, WA, USA
Reg: 04-18-01
05-26-14 11:35 AM - Post#2456070    
    In response to 52 deluxe

I think that if you look at step 6 on page 75 of the Accessory Installation manual, you'll see what that connector is from. The step says to "Disassemble natural with black and green cross tracer wire from connector (located in upper left corner back of instrument panel). Connect natural wire from turn signal switch to connector left on wire (stop lamp switch). Connect natural with black and green cross tracer wire from turn switch to other wire (right-hand stop lamp) with connector furnished in package as shown in figure 185."

So before you install the turn signal, there is a connector on the natural with black and green cross tracer wire. You unplug the wire from one end of this connector (and my experience with the Wade connectors is that the end without the wide "collar" will unplug, but usually not the other one). You then take the connector that was included in the accessory package and plug the wire (that you just unplugged from the original connector) into it. Make sure you plug it into the end that is shown in the drawing, if you ever want to get it out again without destroying the Wade connector.

Now you have two connectors back behind the instrument panel. Plug the wires from the turn signal switch as shown in figure 185, and continue on with the installation instructions.

By the way, if you ruin any of the Wade connectors, you can get replacements from Rhode Island Wire. I read a few different suggestions for pulling the wires out of them and never had much success with that. So I broke a few getting them off.

Oops, sorry RAM_51. I was typing my reply as you were adding yours, so I didn't see it. I think that's right on the money!

1951 Bel Air - January build date.


Edited by kensluys on 05-26-14 11:37 AM. Reason for edit: No reason given.

 
RAM_51 
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RAM_51
Loc: Yakima, WA. USA
Reg: 12-28-02
05-26-14 11:46 AM - Post#2456073    
    In response to kensluys

Not a problem Ken. All of this helps me to re-understand what I've already learned and what I have forgotten. And Rhode Island Wire is a good source for wiring parts...good that you mentioned them.

http://www.riwire.com/

But yeah...the connection would have gone straight across...from brake light switch to tail lights via the body harness in the "A" pillar. You getting this Matt?

1951 Fleetline Preservation
'51 Fleetline DeLuxe 2 DOOR SEDAN (Fathom Green)
'51 Styleline Special BUSINESS COUPE (Shadow Gray)
'53 6500 Dump Bed (Oxidized Red)
'50 Styleline DeLuxe 4 DOOR SEDAN (Mist Green)


 
52 deluxe 
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52 deluxe
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Loc: prairie du chien wi
Reg: 03-09-13
05-26-14 01:22 PM - Post#2456098    
    In response to RAM_51

Yes it's making more sense now. I just found all the factory connectors, now if I can just get them apart with out breaking them.



 
52 deluxe 
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52 deluxe
Age: 36
Loc: prairie du chien wi
Reg: 03-09-13
05-26-14 01:42 PM - Post#2456102    
    In response to 52 deluxe

Got em apart in 1 piece! I filed down a cheap pocket screw driver to sneak inside the connector to relase the terminal.

Because the wiring is looking a bit ratty, I think I will try to find the correct cloth wire and replace all those in the circuit. Along with new wires for the turn signal.



 
52 deluxe 
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52 deluxe
Age: 36
Loc: prairie du chien wi
Reg: 03-09-13
05-26-14 07:19 PM - Post#2456185    
    In response to 52 deluxe

I took the switch completely apart to clean the contacts because It was not giving me good continuity. I found out that it's a sealed switch. A couple drops of wd40 and it works like new again.



 
kensluys 
"14th Year" Silver Supporting Member
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kensluys
Loc: Bellingham, WA, USA
Reg: 04-18-01
05-26-14 08:08 PM - Post#2456190    
    In response to 52 deluxe

Good job on getting the connectors apart without damage! I don't think I was successful even half the time.

And I'm glad to hear that the switch is working fine, too. I'll keep the WD40 trick in mind!

1951 Bel Air - January build date.


 
52 deluxe 
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52 deluxe
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Reg: 03-09-13
05-27-14 03:28 PM - Post#2456361    
    In response to kensluys

Page 75, step 5. Is there a better way to run this wire other than under the car? Under sill plate or up windshield pillar like the rest of the wires seems like a better rout to me.



 
RAM_51 
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RAM_51
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Reg: 12-28-02
05-27-14 05:07 PM - Post#2456390    
    In response to 52 deluxe

  • 52 deluxe Said:
Is there a better way to run this wire other than under the car?



Yeah, I thought that was kind of funky myself. I ran the wire up the pillar in my coupe and on my 4 door, I ran it behind the kick panel and under the sill plates.


1951 Fleetline Preservation
'51 Fleetline DeLuxe 2 DOOR SEDAN (Fathom Green)
'51 Styleline Special BUSINESS COUPE (Shadow Gray)
'53 6500 Dump Bed (Oxidized Red)
'50 Styleline DeLuxe 4 DOOR SEDAN (Mist Green)


 
52 deluxe 
Contributor
Posts: 253
52 deluxe
Age: 36
Loc: prairie du chien wi
Reg: 03-09-13
05-27-14 05:45 PM - Post#2456402    
    In response to RAM_51

I might run it up the windshield pillar. Just a little worried about the wires chafing (sp?)

One other question.. Will the stock tail light sockets will work?



 
RAM_51 
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Posts: 5506
RAM_51
Loc: Yakima, WA. USA
Reg: 12-28-02
05-27-14 06:50 PM - Post#2456424    
    In response to 52 deluxe

  • 52 deluxe Said:
Will the stock tail light sockets will work?


The rear sockets and lamps are not the problem. They had a double filament sockets and the turn signals work on the brake light filament.

The front sockets however are a problem. The stock front sockets only have one filament socket. I think if you stick with a single filament you may have to make an adjustment at the head lamp switch but I'm a little foggy on that.

I have dual filament front sockets on both my '50 and '51. I think if you look at the photo of the NOS accessory kit above, you can see one of the front double contact sockets that was part of the kit.

As far as fishing the wire through the "A" pillar, I think I just used a piece of stiff wire with the end doubled over and taped with electrician's tape to prevent gouging the existing harness.

1951 Fleetline Preservation
'51 Fleetline DeLuxe 2 DOOR SEDAN (Fathom Green)
'51 Styleline Special BUSINESS COUPE (Shadow Gray)
'53 6500 Dump Bed (Oxidized Red)
'50 Styleline DeLuxe 4 DOOR SEDAN (Mist Green)


 


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