Extra wires? add on?

Dedicated to the memory and knowledge shared by Jim Mettler - All things relating to the flow of electrons in a Pinz.
Post Reply
acurtis
United States of America
Posts: 23
Joined: Mon Jan 06, 2020 11:30 pm

Extra wires? add on?

Post by acurtis » Mon Apr 13, 2020 10:31 am

After much fighting with my non working brake lights and turn signals (an interesting circuit BTW), and reading 200 +posts about light troubles (thanks to all posters- what a knowledge base ), I am up and running, during my troubleshooting I came across the following connections coming off the low brake fluid sensor. Anyone have any idea what these might have been used for? I can't see anywhere on the truck they might fit. 1974 Swiss 710M .
Attachments
IMG_0780.JPG
IMG_0780.JPG (67.8 KiB) Viewed 1398 times

User avatar
pcolette
United States of America
Posts: 1518
Joined: Sun Dec 10, 2006 7:38 pm
Location: Southwest Wisconsin

Re: Extra wires? add on?

Post by pcolette » Mon Apr 13, 2020 10:52 am

The original brake fluid reservoir had 2 caps, each with a fluid level sensor built in. You have the newer reservoir with 1 cap and 1 sensor. I would just tape off the extra wires.
IMG_2010.jpeg
IMG_2010.jpeg (372.5 KiB) Viewed 1396 times
Paul C.
_________
'73 Swiss 710M
'89 Puch 230GE
2002 MB G500

acurtis
United States of America
Posts: 23
Joined: Mon Jan 06, 2020 11:30 pm

Re: Extra wires? add on?

Post by acurtis » Mon Apr 13, 2020 1:29 pm

Makes perfect sense-
thanks


I fried my brake light switch( little wiring fire- could not really see to plug things in back there- I assume replacing it will require me to drain my reservoir( or make a mess) and bleed my brakes afterward.

lifefloat
United States of America
Posts: 39
Joined: Thu Nov 23, 2017 7:31 am
Location: Florida Keys

Re: Extra wires? add on?

Post by lifefloat » Mon Apr 13, 2020 5:06 pm

Wow!...…….….My luck!

I also am curious of this wiring right now.

No kidding.

I have the old style dual sensor and all the connector ends are shot on wiring. The connector points on the dual sensors are fine. This all came up for me recently as I just did the brakes. Those old connections I had were probably marginally working but now that I disturbed them in the process of doing brakes they are shot.

I can find the barrel lug connectors. Not something I typically use but I'm sure I can find them.

You have a green wire and a brown wire at this location. What goes to what on the sensor?

User avatar
pcolette
United States of America
Posts: 1518
Joined: Sun Dec 10, 2006 7:38 pm
Location: Southwest Wisconsin

Re: Extra wires? add on?

Post by pcolette » Mon Apr 13, 2020 5:11 pm

The sensor is just a simple on/off float switch so polarity is not an issue. Green or brown can go to either terminal.
Paul C.
_________
'73 Swiss 710M
'89 Puch 230GE
2002 MB G500

User avatar
pcolette
United States of America
Posts: 1518
Joined: Sun Dec 10, 2006 7:38 pm
Location: Southwest Wisconsin

Re: Extra wires? add on?

Post by pcolette » Mon Apr 13, 2020 5:14 pm

acurtis wrote:
Mon Apr 13, 2020 1:29 pm
Makes perfect sense-
thanks


I fried my brake light switch( little wiring fire- could not really see to plug things in back there- I assume replacing it will require me to drain my reservoir( or make a mess) and bleed my brakes afterward.
You shouldn't need to drain the reservoir or bleed the system. Removing the brake light switch will cause some minor drips but will not drain the reservoir. A bit of air may get in but I have found it typically works it's way out through first use.
Paul C.
_________
'73 Swiss 710M
'89 Puch 230GE
2002 MB G500

lifefloat
United States of America
Posts: 39
Joined: Thu Nov 23, 2017 7:31 am
Location: Florida Keys

Re: Extra wires? add on?

Post by lifefloat » Mon Apr 13, 2020 5:38 pm

pcolette wrote:
Mon Apr 13, 2020 5:11 pm
The sensor is just a simple on/off float switch so polarity is not an issue. Green or brown can go to either terminal.
Nice. Thx for that

Post Reply