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> Wire Harness question, Brown/White near brake reservoir
Kansas 914
post May 27 2011, 10:35 AM
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I laid my wiring harness back in the car last weekend and have a question about the brown and brown/white white that leaves the main wiring harness just after the firewall in the front trunk.

What does it terminate to? It continues down to the brake master cylinder pressure fail switch. I know what to do with it there - but what does it attach to up top?

I am working on a early '72 model year.

Thanks in advance!
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SirAndy
post May 27 2011, 10:54 AM
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QUOTE(Kansas 914 @ May 27 2011, 09:35 AM) *

I laid my wiring harness back in the car last weekend and have a question about the brown and brown/white white that leaves the main wiring harness just after the firewall in the front trunk.

What does it terminate to? It continues down to the brake master cylinder pressure fail switch. I know what to do with it there - but what does it attach to up top?

I am working on a early '72 model year.


Looks like the brown/white goes from the brake warning switch (32) to the upper left light on the gauge.

EDIT: Bollocks. I don't know what i'm talking about ...
(IMG:style_emoticons/default/idea.gif)

(IMG:http://www.914world.com/bbs2/uploads_offsite/www.pelicanparts.com-179-1306515265.1.jpg)
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Kansas 914
post May 27 2011, 11:02 AM
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Thanks Andy,

I have the brown white in the guage cluste attached to the warning lamp. This is in the front trunk (barely). Maybe switch 34 is the clue - let me grab my book - I have been working off a laminated schematic and there may be ommissions.

Picture:

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Kansas 914
post May 27 2011, 11:11 AM
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Hmmm - 34 is handbrake contact - still confused.
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r_towle
post May 27 2011, 11:12 AM
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Lemme go look.
From what I recall, the old switch on the master had two prongs...the replacement has one prong.

Give me a minute.

Rich
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Kansas 914
post May 27 2011, 11:15 AM
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QUOTE(r_towle @ May 27 2011, 12:12 PM) *

Lemme go look.
From what I recall, the old switch on the master had two prongs...the replacement has one prong.

Give me a minute.

Rich

Rich,

This wire continues down to the MC location through the body with a grommett and then to the wires with the boot. The wires in question are between the MC and the firewall entrance.
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r_towle
post May 27 2011, 11:17 AM
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The way its hooked up now is right.
I have one wire not doing anything due to the new sensor.

RIch
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Kansas 914
post May 27 2011, 11:27 AM
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QUOTE(r_towle @ May 27 2011, 12:17 PM) *

The way its hooked up now is right.
I have one wire not doing anything due to the new sensor.

RIch

Thanks Rich,

These wires would never reach the MC sensor - and the wires at the MC have two wires (Brown = Ground and Brown/White = Warning Lamp).

MC sensor wires:

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bdstone914
post May 27 2011, 12:00 PM
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What angle is that picture at? I believe the grommet in that picture is one I was trying to identify in my grommet thread.
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Kansas 914
post May 27 2011, 12:06 PM
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QUOTE(bdstone914 @ May 27 2011, 01:00 PM) *

What angle is that picture at? I believe the grommet in that picture is one I was trying to identify in my grommet thread.

Hi Bruce

The picture was taken from below where the MC would be.
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r_towle
post May 27 2011, 12:26 PM
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lemme go look at the breakout where you show it.

rich
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Valy
post May 27 2011, 12:30 PM
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1. Can you double-check the colors? From the picture it seems that none of the wires is white.

2. Are you sure you routed the wires the right way? It looks like the buzzer and door open switch would connect to that white and brown wires but that's located under the dash.
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r_towle
post May 27 2011, 12:31 PM
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not much help here.

71 does not have that breakout in the harness.
early 72 has the breakout but its blowing in the wind...not plugged into anything.
saying that...my fresh air blower on the 72 has never worked...

Rich
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914Mike
post May 27 2011, 12:39 PM
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QUOTE(Kansas 914 @ May 27 2011, 09:35 AM) *

I laid my wiring harness back in the car last weekend and have a question about the brown and brown/white white that leaves the main wiring harness just after the firewall in the front trunk.

What does it terminate to? It continues down to the brake master cylinder pressure fail switch. I know what to do with it there - but what does it attach to up top?

I am working on a early '72 model year.

Thanks in advance!

I've seen brake fluid reservoir caps that had two terminals on them, maybe your harness was modified to take one of those. It's the right length, and wired to the correct wires...
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SirAndy
post May 27 2011, 01:00 PM
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QUOTE(Kansas 914 @ May 27 2011, 10:02 AM) *
This is in the front trunk (barely).

Hmmm, that does look odd there. Ignore my previous post, i was thinking of a different wire.


This main harness does not have that brake-out connection: (IMG:style_emoticons/default/idea.gif)

(IMG:http://www.914world.com/bbs2/uploads/post-2-1088111947.jpg)
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r_towle
post May 27 2011, 01:02 PM
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That is funny.
I love how everything looks easy enough to find....till you get to the pile of wires marked "gauge cluster"

Rich
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rick 918-S
post May 27 2011, 01:07 PM
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I checked a 72,73,and 74. The 73 and 74 did not have the upper wiring. My 72 ( (IMG:style_emoticons/default/alien_2.gif) ) has the upper wires but they are not plugged into anything. It reminds me of my BMW 2002. The brake cap is the same style but has a float attached to the under side. Two wires plugged into the cap and activated a brake light warning if the fluid level was low. I don't think you need to worry about those Mike.

The lower wires are for the brake light switch on the master cylinder. If the wires don't reach the switch location check to see if you have it run correctly on the other side of the firewall. You may have a snag caausing the wires to be too short.
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Kansas 914
post May 27 2011, 01:22 PM
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QUOTE

I've seen brake fluid reservoir caps that had two terminals on them, maybe your harness was modified to take one of those. It's the right length, and wired to the correct wires...

I have owned this car since 1978 - unmolested - I'm the second owner. This a factory wiring harness - no mods.

Maybe the factory was going to use the fluid reservoir with a pressure switch cap (perfect length) buy chose not to later? (IMG:style_emoticons/default/confused24.gif)

Odd to leave the wires there unterminated - slight potential for a ground.

Wierd........
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r_towle
post May 27 2011, 01:28 PM
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QUOTE(Kansas 914 @ May 27 2011, 03:22 PM) *

QUOTE(914Mike @ May 27 2011, 01:39 PM) *

I've seen brake fluid reservoir caps that had two terminals on them, maybe your harness was modified to take one of those. It's the right length, and wired to the correct wires...

I have owned this car since 1978 - unmolested - I'm the second owner. This a factory wiring harness - no mods.

Maybe the factory was going to use the fluid reservoir with a pressure switch cap (perfect length) buy chose not to later? (IMG:style_emoticons/default/confused24.gif)

Odd to leave the wires there unterminated - slight potential for a ground.

Wierd........


I looked at Abel's wrecked 73 and I dont see a break out...it may be under the tank, but I cant see it there.
Cap was from a box of parts...so that wont be OEM...


Rich
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Kansas 914
post May 27 2011, 01:37 PM
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QUOTE(bdstone914 @ May 27 2011, 01:00 PM) *

What angle is that picture at? I believe the grommet in that picture is one I was trying to identify in my grommet thread.

There's a grommet thread?? I need to find that!
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