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> Troubleshooting my electrical issues., My first problem was blinking red light on the dash for brakes
vin man
post Feb 11 2017, 06:08 PM
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Edit: Renamed the thread because what started out as one electrical problem has led to others and I'm hoping to capture all the information in this one thread.

Initial Problem:

When I turn on the 72, the red light on the dash (in the top part of the gauge on the left side of the dash) blinks and won't stop. I've made sure the e-brake is all the way off. I'm wondering where is the switch that controls this light?

I've read that when the brake master cylinder is replaced, there is a switch on the MC that needs to be reset. I used a MC from Rock Auto and there is not reset switch button. Only the electrical switch that activates the brake lights.

I have a brown wire that is connected to nothing in the area of the e-brake handle. I've tried grounding it but the light still blinks on the dash.

Any advice would be appreciated.


Click here for video of the blinking light: Blinking red light

(IMG:http://www.914world.com/bbs2/uploads_offsite/i304.photobucket.com-11380-1486858110.1.jpg)

Master cylinder:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i304.photobucket.com-11380-1486858537.1.jpg)
(IMG:http://www.914world.com/bbs2/uploads_offsite/i304.photobucket.com-11380-1486858538.2.jpg)
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vin man
post Feb 28 2017, 03:37 PM
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ok, issues 3 (and 4) resolved.

After resolving Issue 2 - the flashing brake light, I did 2 things. I replaced the headlight relay and then put everything back together and reinstalled the upholstery.

I had replaced the original 4 post headlight relay with a 5 post relay. Headlight relay post
I had found some info on the Samba website that said that I should just run a hot wire to post 30, and therefore not have to run a jumper between 30 and 56. This was not the case. A JUMPER was REQUIRED. I removed the constant power to 30, put the jumper in place, and the headlights were no longer always powered regardless of the key position.

(IMG:http://www.914world.com/bbs2/uploads_offsite/images.thesamba.com-11380-1487356047.1.jpg)

Issue number 3 was that my brake lights were always on and, when I depressed brake pedal, I was also getting some lights on the dash and power to the coil.

I caused this problem when reinstalling the interior. I had screwed the plastic housing that holds the armrest through the floor. When I did so, I went right through the main power wire, nicked the brake light wire, and possibly exposed a couple others as well.

I did a lot of troubleshooting and have a much better appreciation of the electrical system and also much more comfortable reading those wiring diagrams. Really helped a lot to blow it up to 3 foot by 4 foot and stick to the wall as me and a buddy worked through the circuits.

Car is all back and buttoned up. Drove it today and very pleased!
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Posts in this topic
vin man   Troubleshooting my electrical issues.   Feb 11 2017, 06:08 PM
Spoke   The brake warning light will flash if the brown wi...   Feb 11 2017, 10:32 PM
vin man   The brake warning light will flash if the brown w...   Feb 11 2017, 10:43 PM
vin man   The brake warning light will flash if the brown w...   Feb 12 2017, 11:46 AM
rgalla9146   The brake warning light will flash if the brown ...   Feb 12 2017, 12:23 PM
vin man   [quote name='vin man' post='2453875' date='Feb 12...   Feb 12 2017, 01:31 PM
vin man   I've been doing some more research and did fin...   Feb 11 2017, 10:45 PM
AlanB   Wow, talk about the right post at the right time. ...   Feb 12 2017, 08:01 AM
Spoke   You can pull the bulb out to stop the flashing.   Feb 12 2017, 01:58 PM
vin man   You can pull the bulb out to stop the flashing. w...   Feb 12 2017, 03:45 PM
Spoke   You can pull the bulb out to stop the flashing. ...   Feb 12 2017, 05:03 PM
vin man   [quote name='vin man' post='2453938' date='Feb 12...   Feb 12 2017, 05:25 PM
Spoke   If I do as suggested and remove the bulb, breaking...   Feb 12 2017, 06:51 PM
vin man   If I do as suggested and remove the bulb, breakin...   Feb 12 2017, 09:47 PM
vin man   [quote name='vin man' post='2453959' date='Feb 1...   Feb 13 2017, 05:18 PM
Rand   Isn't there a reset button on the master cylin...   Feb 12 2017, 05:44 PM
vin man   Isn't there a reset button on the master cyli...   Feb 12 2017, 05:59 PM
ndfrigi   i did remove the bulb from the gauge 4 yrs ago. no...   Feb 12 2017, 06:09 PM
vin man   i did remove the bulb from the gauge 4 yrs ago. n...   Feb 12 2017, 06:15 PM
ndfrigi   or maybe the noise is for the door when it is open...   Feb 13 2017, 05:24 PM
Dave_Darling   The door-ajar buzzer does not sound like clicking....   Feb 13 2017, 06:05 PM
vin man   New relay will be delivered on Wednesday. switch f...   Feb 13 2017, 07:45 PM
Spoke   New relay will be delivered on Wednesday. Where...   Feb 15 2017, 12:10 PM
vin man   [quote name='vin man' post='2454367' date='Feb 13...   Feb 15 2017, 12:32 PM
Spoke   Autozone also has one. This is the one from Aut...   Feb 15 2017, 02:50 PM
vin man   [quote name='vin man' post='2454904' date='Feb 15...   Feb 15 2017, 03:00 PM
vin man   I just wanted to add some more information on what...   Feb 14 2017, 12:16 PM
vin man   Well now I'm really baffled. I replaced the r...   Feb 14 2017, 03:50 PM
914_teener   Man...ya get bonus points. Keep at it. Have you ...   Feb 14 2017, 08:17 PM
Spoke   What is the part number on that blinker. Not the p...   Feb 15 2017, 04:05 PM
vin man   A few pics. The first is the original relay tha...   Feb 15 2017, 08:35 PM
Dave_Darling   URO... Not exactly the highest quality. I believ...   Feb 15 2017, 10:23 PM
vin man   URO... Not exactly the highest quality. I belie...   Feb 16 2017, 08:35 AM
vin man   Anyone have a recommendation for a person/company ...   Feb 16 2017, 10:18 AM
scallyk9   Hmm. I've got a similar problem with the indic...   Feb 16 2017, 05:45 PM
vin man   :Qarl: Got it working! An electrical genius...   Feb 16 2017, 11:03 PM
vin man   Problem #3 Premature celebration. :headbang: On...   Feb 19 2017, 12:55 PM
vin man   Update: I was concerned that maybe I did not wire...   Feb 21 2017, 08:48 PM
Dave_Darling   Unplug the switch? --DD   Feb 21 2017, 10:55 PM
vin man   Unplug the switch? --DD Will give it a try to...   Feb 22 2017, 04:21 PM
914_teener   You rule each thing out. You test input and out ...   Feb 22 2017, 04:56 PM
vin man   Ruled out headlight switch and brake light switch....   Feb 24 2017, 09:18 PM
vin man   ok, issues 3 (and 4) resolved. After resolving Is...   Feb 28 2017, 03:37 PM
mgphoto   There are 2 diodes behind the combo gauge, the bra...   Mar 1 2017, 09:24 AM


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