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> Brain Trust Help needed on Parking Brake Light, Parking Brake Light Always on......
Gatornapper
post Jul 4 2025, 07:40 PM
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Once again need the help of the great 914 Brain Trust here........

My Parking Brake Light stays on all the time.

The switch is fairly new and it is functioning properly.

Disconnecting the brown (ground) wire to the switch, it has no continuity or resistance to ground. So it is not "grounded out" somewhere.

I see in my great 914 electrical schematic of the ground circuit for the switch and light that there are two diodes in the circuit.

I am guessing that one of them failed.

Can anyone tell me where these two diodes are located?

Or where else the problem might be?

As always,

TIA,

GN
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Posts in this topic
Gatornapper   Brain Trust Help needed on Parking Brake Light   Jul 4 2025, 07:40 PM
jim_hoyland   MC ? I just went through this… :)   Jul 4 2025, 08:41 PM
Jamie   MC ? I just went through this… :) I'm also...   Jul 5 2025, 09:03 AM
Superhawk996   I'm also trying to troubleshoot the flashing...   Jul 5 2025, 12:25 PM
Literati914   @Gatornapper - if you pull the combo gauge, you...   Jul 5 2025, 10:01 AM
Gatornapper   Ah yes! On my schematic it does look like one...   Jul 5 2025, 10:47 AM
BillC   What is "MC"? "MC" is short ...   Jul 5 2025, 11:05 AM
Literati914   What is "MC"? "MC" is short...   Jul 5 2025, 12:10 PM
Superhawk996   Simplified schematic from Spoke   Jul 5 2025, 12:23 PM
Gatornapper   Ah, yes. Thank you SH for the schematic. NO diod...   Jul 9 2025, 05:44 AM
Spoke   For the MC warning switch, you can disconnect the ...   Jul 9 2025, 06:36 AM
Gatornapper   Thanks Spoke. Light still flashes with brake wire...   Jul 11 2025, 06:41 AM
914   Is there a reset button/Switch on the Master Cyl? ...   Jul 11 2025, 07:23 AM
Jamie   Is there a reset button/Switch on the Master Cyl?...   Jul 11 2025, 08:55 AM
Gatornapper   I'll do the same. Lift presently occupied pre...   Jul 14 2025, 03:14 PM
Superhawk996   What in the world does this wire to the MC do? ...   Jul 14 2025, 05:47 PM
Gatornapper   SH - Have electrical schematics for '87 944? ...   Jul 20 2025, 01:56 PM
Superhawk996   SH - Have electrical schematics for '87 944?...   Jul 20 2025, 02:38 PM
Cairo94507   On my MC there is- ATE. :beer2:   Jul 11 2025, 08:06 AM
Gatornapper   Change of subject as I have no where else to go: ...   Jul 17 2025, 06:07 AM
Literati914   I have the same issue with the stupid flashing lig...   Jul 17 2025, 12:35 PM
Gatornapper   Thanks. Gonna unplug mine - if there is one. My ...   Jul 17 2025, 07:28 PM
Superhawk996   No need for warning light. :blink: :headbang...   Jul 17 2025, 10:18 PM
Superhawk996   I’d say ‘don’t be surprised if there is n...   Jul 17 2025, 10:14 PM


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