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Discussion Topic:
49 custom tudor brake light question
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cwaszczyk |
07-30-2020 @ 3:41 PM
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Member
Posts: 15
Joined: Dec 2012
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I was checking my brake lights because I thought that the fuse was blown and they weren't working. Found out they are just needed more pressure on the pedal. I did notice that the drivers side seems to come on later than the passenger side. Also when I turn on the parking lights the ds gets dimmer and the ps does get brighter. Any ideas? Could it just be a wrong bulb? I will swap them to check but anything else? Any input would be great. TY
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nelsb01 |
07-30-2020 @ 9:37 PM
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Senior
Posts: 983
Joined: Oct 2009
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There are a number of things to check. First question is what type brake fluid are you using? If using silcone brake fluid, your stop light switch could be not working correctly as silcone brake fluid likes to destroy the internals of the switch. Next, is check the wire connections under the dash. Above the steering wheel you will find a large group of wires and connectors. One of those connections goes to the tail lights. I used to have bad working tail lights and tried everything, but it ended up being a loose connection under the dash. And, of course there is the ground issue. With the tail lights acting like you say, it most likely is a grounding issue, so check all the connections and also check to see if the screws and nuts are dirty at the tail light units. This is just a start and i know that others will have more to add.
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JayChicago |
07-31-2020 @ 8:38 AM
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"when I turn on the parking lights the ds gets dimmer and the ps does get brighter." Based on that symptom, my guess is a poor path to ground on the ds tail/stop light. Path to ground is from the light bulb base to the socket, socket to the tail light housing, housing to the body. Something loose/dirty in that path.
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cwaszczyk |
07-31-2020 @ 1:42 PM
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Thank you I’ll start with checking connectionss and grounds.
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51504bat |
07-31-2020 @ 2:09 PM
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My guess is you have 2 issues. First is a ground problem and the second is the switch itself. The stock off the shelf switch I had in my '39 p/u didn't activate the brake lights until the brakes were fully applied. I purchased a low pressure switch from a supplier in Orange County, CA . I have the info down in my shop and I can post it later today. The low pressure switch allowed the brake lights to work when I just tapped the brakes as opposed to only coming on with full pedal. Others have used a switch from Harley Davidson as a replacement for leaking switches. Don't know if they are low pressure or not.
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JayChicago |
07-31-2020 @ 2:54 PM
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51504bat Did that low pressure brake switch have the correct bullet connectors? If so, I would like to hear where you got it. I replaced my brake switch with a Harley Davidson part because it does come on with less pressure. But I had to create a wire transition pieces to go from the original bullet connectors to the modern spade terminals on the HD switch.
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cwaszczyk |
07-31-2020 @ 3:54 PM
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On a side note does anyone know what the bulb number is for the front parking lights? I know tail are 1154. Similar but slightly different side nubs.
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51504bat |
07-31-2020 @ 8:02 PM
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1057 12 volt single element 1129 6 volt single element if my memory is correct.
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51504bat |
07-31-2020 @ 8:20 PM
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CPP Classic Performance Products www.classicperform.com 800-522-5004 Part number CPP-LBPS yes has the same bullet connectors as a stock switch
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cwaszczyk |
08-01-2020 @ 5:37 AM
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In regards to the bulbs. Looks like both of those are a single connection point. Mine is a double? I also checked cup and they had no price on the brake switch. I’ll call them during the week
This message was edited by cwaszczyk on 8-1-20 @ 5:38 AM
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