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| Hydraulic Brake Switch https://ausmini.com/forums/viewtopic.php?f=2&t=101922 |
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| Author: | bharp831 [ Sun Jul 02, 2023 12:24 pm ] |
| Post subject: | Hydraulic Brake Switch |
Hi All Here is an odd problem. Checked all lights and headed off for the annual registration inspection. Brake lights were no longer working. Back home with multimeter in hand. Power was getting to hydraulic brake line switch, but no power to lights. Disconnected wiring socket at rear and power getting to socket. Plugged back in and no power to lights or socket. Possibly bulb shorting out line, so removed and tested bulbs,- all good and power getting to light socket as well. Replaced bulbs and no power again to rear. Checked hydraulic switch for resistance, works fine with low resistance when brake pressed, but when voltage applied and brake pressed no power to other side of switch, so not working under load. Removed switch and blew out with compressor and tested out of vehicle with load and working again. Conclusion, dirt in switch. Reinstalled, brake lights working fine. Drove out of garage, and lights not working again with no power getting through switch under load. New one on order. Anyone else had this problem? Bazzz |
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| Author: | DavidE [ Sun Jul 02, 2023 1:49 pm ] |
| Post subject: | Re: Hydraulic Brake Switch |
bharp831 wrote: Hi All Here is an odd problem. Checked all lights and headed off for the annual registration inspection. Brake lights were no longer working. Back home with multimeter in hand. Power was getting to hydraulic brake line switch, but no power to lights. Disconnected wiring socket at rear and power getting to socket. Plugged back in and no power to lights or socket. Possibly bulb shorting out line, so removed and tested bulbs,- all good and power getting to light socket as well. Replaced bulbs and no power again to rear. Checked hydraulic switch for resistance, works fine with low resistance when brake pressed, but when voltage applied and brake pressed no power to other side of switch, so not working under load. Removed switch and blew out with compressor and tested out of vehicle with load and working again. Conclusion, dirt in switch. Reinstalled, brake lights working fine. Drove out of garage, and lights not working again with no power getting through switch under load. New one on order. Anyone else had this problem? Bazzz Stick the long spout of a can of WD-40 or the like up the hole, exercise the pin a few times, spray again, blow it out and try again. |
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| Author: | Steam [ Sun Jul 02, 2023 2:04 pm ] |
| Post subject: | Re: Hydraulic Brake Switch |
I got thoroughly sick and tired of messing with the hydraulic switch. The new ones are next to useless aswell. Fitted a brake pedal switch 3 years ago and have not had to mess with it since. |
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| Author: | Dave Dobeson [ Sun Jul 02, 2023 2:15 pm ] |
| Post subject: | Re: Hydraulic Brake Switch |
Bazz I had the same problem a few years ago. The contacts once corroded won't carry enough current to light the bulbs &/or lights only come on with very heavy braking: too late for the idiot behind you. My solution (NON-standard, but working perfectly for 6 years) was to put a lever micro switch above the brake pedal lever, wired in parallel with the hydraulic switch. The two switches are wired to earth so that they switch on a relay that sends 12v to the stop lights. The lights come on at the first touch of the pedal. (A high centre brake light on the back parcel shelf is much brighter than the original brake lights and also up at the height of most modern car brake lights.) Good luck Dave D |
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| Author: | Bill B [ Sun Jul 02, 2023 5:32 pm ] |
| Post subject: | Re: Hydraulic Brake Switch |
Steam wrote: I got thoroughly sick and tired of messing with the hydraulic switch. The new ones are next to useless aswell. Fitted a brake pedal switch 3 years ago and have not had to mess with it since. Ditto for Steam's comments. The original switches lasted a long time but with less use and over time, they corrode or silt-up. I haven't investigated the fault as deeply, but changed to a non-original but functioning pedal switch too. |
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| Author: | TK [ Sun Jul 02, 2023 8:33 pm ] |
| Post subject: | Re: Hydraulic Brake Switch |
Agreed new "Lucas" switch last for a week or two. |
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| Author: | IndigoBlueCooperS [ Sun Jul 02, 2023 11:17 pm ] |
| Post subject: | Re: Hydraulic Brake Switch |
Some time back I was told the Harley Davidson 72023-51E hydraulic switch was interchangeable. Anyone tried it? |
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| Author: | drmini in aust [ Tue Jul 04, 2023 12:29 pm ] |
| Post subject: | Re: Hydraulic Brake Switch |
After getting 3 months out of a new switch I fitted a clubby pedal switch instead. Lockheed switch was good, recent noname ones not so. |
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| Author: | Steam [ Tue Jul 04, 2023 2:01 pm ] |
| Post subject: | Re: Hydraulic Brake Switch |
Dr, Which model clubmans had a pedal switch? 72 thru 76 here all have hydraulic. I am looking for a better fit than somewhat heath robinson I hashed up. |
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| Author: | drmini in aust [ Tue Jul 04, 2023 8:59 pm ] |
| Post subject: | Re: Hydraulic Brake Switch |
The 76-_78 Clubman had them. Easy to fit but need to put an L bracket on the pedal box. I bought the switch from karcraft. P/no: 13H3735L/2 Advantage over hydraulic is the lamps light before the anchors take effect, so the Muppet behind you has more time to react. |
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| Author: | winabbey [ Wed Jul 05, 2023 1:51 pm ] |
| Post subject: | Re: Hydraulic Brake Switch |
This is the drawing for the switch bracket. Can someone explain explain how and where it fits? Or maybe a photo of one in place. Attachment: AYA5162 Bracket Stop Light Switch wm.jpg Here's the switch - https://www.ebay.com.au/p/2083485666 |
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| Author: | DavidE [ Wed Jul 05, 2023 3:04 pm ] |
| Post subject: | Re: Hydraulic Brake Switch |
winabbey wrote: This is the drawing for the switch bracket. Can someone explain explain how and where it fits? Or maybe a photo of one in place. Attachment: AYA5162 Bracket Stop Light Switch wm.jpg If the hole shown is where the switch is mounted, then how is the bracket fitted in place? |
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| Author: | drmini in aust [ Wed Jul 05, 2023 3:45 pm ] |
| Post subject: | Re: Hydraulic Brake Switch |
They were spot welded. I made mine from dexion slotted angle and drilled a 5/16 hole for a bolt. Not much room, I cut down a drill bit and used my short right angle corded drill. Edit I could have taken the pedal box out to make pretty, but not much point on a bitsa, you can't see its beauty anyway. I just wanted stop lights asap. |
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| Author: | winabbey [ Wed Jul 05, 2023 4:49 pm ] |
| Post subject: | Re: Hydraulic Brake Switch |
drmini in aust wrote: They were spot welded. Ah, that answers my question. With no bracket mounting holes shown I thought there might be another drilling instruction drawing, but spot welding makes sense. It's position may be shown on the pedal box drawing. |
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| Author: | DavidE [ Wed Jul 05, 2023 4:54 pm ] |
| Post subject: | Re: Hydraulic Brake Switch |
winabbey wrote: drmini in aust wrote: They were spot welded. Ah, that answers my question. With no bracket mounting holes shown I thought there might be another drilling instruction drawing, but spot welding makes sense. It's position may be shown on the pedal box drawing. I'll have to check my pedal box stock to see what is what when I am allowed to go searching. |
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