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Old 01-12-2021, 02:45 PM
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Question 65 GTO Parking brake warning light wiring question

I have bought the harness from Ames along with the switch, and will fabricate the mounting bracket for the switch. For the wiring, I assume I remove the "generic' dash light bulb/socket that is in the "BRAKE" location on the guage panel and swap it with the replacement socket/bulb, but then what do I connect the replacement power connector to for proper power? It is a fairly short wire with a "slip-on" connector like you would connect to a spare spade on the fuse panel, but its so short I can't see it reaching anywhere near the fuse panel. Is there another wire connected to the guage panel somewhere near the BRAKE indicator that I pull from a spade and then connect this one "in-line"? I looked under the dash while setting up my console wiring harness but I couldn't see where this might connect for power. I can easily cut/splice it longer and run all the way down to the fuse panel but I assumed it was designed same as an original I saw on ebay that also has a short power wire.

Thanks for any help!

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Old 01-12-2021, 04:14 PM
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Default The key on 12 volt + power wire for the accessory brake warning lamp

The power wire plugs into the dash harness, which on the early 64-67 Lemans or GTO every harness has a provision built into it for "key on" 12 volt battery +.

The wire end is unused if the car has no accessory optional features.

A power antenna or a rear window defogger would also connect to that same wire.


It is a twined dark brown wire in behind the gauges; joined together at the crimp end; with a tiny plastic plug-in. Hence the short wire for the power plug-in on the one wire of that light bulb mini-harness.
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Old 01-12-2021, 06:03 PM
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Quote:
Originally Posted by Peter Serio View Post
The power wire plugs into the dash harness, which on the early 64-67 Lemans or GTO every harness has a provision built into it for "key on" 12 volt battery +.

The wire end is unused if the car has no accessory optional features.

A power antenna or a rear window defogger would also connect to that same wire.


It is a twined dark brown wire in behind the gauges; joined together at the crimp end; with a tiny plastic plug-in. Hence the short wire for the power plug-in on the one wire of that light bulb mini-harness.
Pete, that is great info! I see that the harness you show has a lot longer power wire than the repro I got from Ames, but I'll make it work.

I just now looked on the 65 Tempest/GTO Wiring Manual diagram and I do see the dual brown wire connection you mention shown for "Accessory Feed", so I will track that down under the dash and connect to that. I have a power antenna installed so I will be needing to pull from that same power source when I connect that up too (I need to buy and install the power antenna switch first).

Thanks!
Randy

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Old 01-12-2021, 06:23 PM
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Default FWIW...

If you car never had the Parking Brake Warning Light, then there is no socket within the factory hole.
You should just see/have a piece of factory-applied tape over the hole if it hasn't already fallen off.
Not sure what bulb if any came with the socket from Ames but the OE bulb was/is a Flasher Bulb.

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Last edited by Jeff Hamlin; 02-26-2024 at 07:17 AM.
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Old 01-12-2021, 07:03 PM
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Quote:
Originally Posted by Jeff Hamlin View Post
If you car never had the Parking Brake Warning Light, then there is no socket within the factory hole.
You should just see/have a piece of factory-applied tape over the hole if it hasn't already fallen off.
Not sure what bulb if any came with the socket from Ames but the OE bulb was/is a Flasher Bulb.
You guys have great reference photos! So there is currently a light there in a metal frame just like the other dash illumination bulbs, and it has only one grey wire like them too. So maybe it is in the wrong spot, I do have one spot on the dash in the tach pod on the right that is dim/looks like the bulb is burned out but maybe they put that bulb in the wrong spot. I know it won't work for Parking brake since it isn't switched.

I'll get myself upside down under the dash again soon and see exactly what I'm working with. No bulb came with the socket, this wiring expects the same (89?) bulb as the dash illumination bulbs.

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Old 01-13-2021, 02:25 PM
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Yes, the bulb for your parking brake warning lamp would be the same as the bulbs in the dash harness that are inside of the grey wire; metal can sockets. I remember those as being #1895 bulbs.

GM made those mini-harnesses for several of their divisions and so some have a short power wire (Pontiac A body cars) and some of those are longer and plug in for 12 volts of battery "key on" power directly into the fuse block.

Either way the light turns on the same.

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Old 02-02-2021, 06:44 PM
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Thanks for the guidance and reference materials. I purchased the Ames switch and nut combo plus the wiring harness, which I then modified to reach the fusebox. Fabricated a bracket based on pictures that provided perspective then test fit/modified until it works. Never had a BRAKE warning light before!
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Old 02-02-2021, 06:50 PM
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Well Done! Did the harness kit come with a Flasher Bulb?

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Old 02-02-2021, 07:05 PM
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Quote:
Originally Posted by Jeff Hamlin View Post
Well Done! Did the harness kit come with a Flasher Bulb?
Hey Jeff, thanks! No bulb came with harness, like Pete said it just takes the standard 1895 dash illumination bulb. And as for the power connection, I should have been able to find the double-brown-wire connector that Pete mentioned and use that, but I didn't so I just extended the power wire myself; the switch/ground wire was long enough to reach the BRAKE light bulb as-is.

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Old 02-02-2021, 08:41 PM
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Question

OK, I'm way out in Leftfield.
The NOS kit I bought years ago came with a "Flasher" bulb.
This is why I keep mentioning it, This bulb is the same but has the flasher "Metal" strip that pulses went hot.
I have been using it for years now and had a hard time finding replacements.

So it may not be correct for '66 ?? but I like it.

Click on image to see Short Vid;
IMG-0226 by J. Hamlin, on Flickr
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Old 02-03-2021, 08:14 AM
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Quote:
Originally Posted by Jeff Hamlin View Post
OK, I'm way out in Leftfield.
The NOS kit I bought years ago came with a "Flasher" bulb.
This is why I keep mentioning it, This bulb is the same but has the flasher "Metal" strip that pulses went hot.
I have been using it for years now and had a hard time finding replacements.

So it may not be correct for '66 ?? but I like it.

Click on image to see Short Vid;
IMG-0226 by J. Hamlin, on Flickr
Wow Jeff that is cool! I get it, great way to get your attention. I'll see if I can find one too, my car won't be getting judged any time soon...

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Old 02-06-2021, 08:32 PM
66sprint6 66sprint6 is offline
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I believe that is a #257 bulb that flashes.

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Old 02-07-2021, 08:43 AM
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That is correct, and if you can't find a decent price in the automotive sector,
Lionel Trains used these as well and are usually price far less.

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Old 02-07-2021, 09:48 AM
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Quote:
Originally Posted by Jeff Hamlin View Post
That is correct, and if you can't find a decent price in the automotive sector,
Lionel Trains used these as well and are usually price far less.
Yep, I just ordered two 257 flasher bulbs from a Lionel trains guy on ebay, he has tons of 14V stuff that supposedly matches if bulbs are hard to find.

I am definitely going to swap mine out; its not like I won't notice the BRAKE light when it is on (since I've never had it before) but flashing will be even cooler.

Thanks everyone!

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Old 02-07-2021, 08:45 PM
Hokie1984 Hokie1984 is offline
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Also check the pinball supply houses.

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Old 02-10-2021, 06:37 PM
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https://www.ebay.com/itm/NOS-1965-Po...MAAOSwSHlgJFlp

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Old 02-11-2021, 11:10 AM
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Quote:
Originally Posted by gto19 View Post
Yep that looks like everything except the bracket that I had to fabricate. There was an ebay listing earlier that had the whole package for about $110 I think.

Just got my blinker bulbs yesterday, I'll swap it in to see how it looks soon.

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Old 02-13-2021, 06:46 PM
66sprint6 66sprint6 is offline
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I just realized that I couldn't add this option to my Tempest if I wanted to. I don't have a pic of my speedo, but its like this one:

https://www.ebay.ca/itm/1964-1965-19...oAAOSwPPZgJ2LL

It doesn't even have a hole to insert the light socket. And for sure not the little box with the red lens. I guess in this case I'd do the warning light to the left of the dash bezel.

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Old 02-13-2021, 11:01 PM
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Quote:
Originally Posted by 66sprint6 View Post
I just realized that I couldn't add this option to my Tempest if I wanted to. I don't have a pic of my speedo, but its like this one:

https://www.ebay.ca/itm/1964-1965-19...oAAOSwPPZgJ2LL

It doesn't even have a hole to insert the light socket. And for sure not the little box with the red lens. I guess in this case I'd do the warning light to the left of the dash bezel.
Out GTO is the same.
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Old 02-13-2021, 11:48 PM
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FWIW this is what I did.

https://forums.maxperformanceinc.com...d.php?t=799903

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