Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×
 


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 06-10-2021, 06:15 AM   #1
2 Rivet Member
 
1972 29' Ambassador
East Moriches , New York
Join Date: Jun 2015
Posts: 33
circuit board wire diagram 1971/1972 control panel ?

Im looking for a good diagram that shows the COLORS going into circuit board. And where they come from. The manual show them coming from a connector (which i do not have) and its black and white and no mention of colors. I traced all the wires I know what ones go to the probes ... and of course I can get the control light to work a new digital volt meter, and water pump. ...

But when I connect the wires in the fashion that I think I removed them the led lights just come on ? and stay on ... no switch needed ... Voltage is getting to them with out any switches ? bad transistor ?

Also how many 12V + inputs should be going in to the board ?
Is the white wire the Ground "-" ?

I have things that show (2) 12+ inputs into board ... that does not make sense

Anyone have really good photos of the board showing correct good wiring ?
I think mine was messed up when i took my photos before reconstruction .
hence why all the bulbs were burnt out and no connector.

Thank you.
72TINCAN is offline   Reply With Quote
Old 07-07-2021, 11:37 AM   #2
2 Rivet Member
 
1973 23' Safari
Germantown , Tennessee
Join Date: May 2021
Posts: 28
I have a 73, which based on looks alone seems to have the same switch arrangement as the 71/72. I don't have the manual with me, but I think I can answer a couple of general questions for you. The colors may not be correct but I doubt they changed it (?). The following is how I understand it.

Mine has two +12v connections. One is a grey wire that doesn't go directly to the board. The other is a red wire that comes from the wiring harness. The grey one (with a working Univolt system) supplied power to the panel when connected to shore power. The grey wire connects to a white end of one of the bulb fixtures and lights up when on shore power to confirm you are using shore power. The current goes through that bulb and then to another switch (the ammeter maybe?) and then on to supply the circuit board via a purple wire that connects near the fuse. If you are on battery power, the red wire supplies power directly to the circuit board, also near the fuse.

If you have one of the fresh water or black water lights come on when its switch isn't pressed, I think you have a bad transistor and/or resistor. I had both. They were fairly easy to replace if you know how to solder. If you have other lights that come on, not sure what that means. Orange wires are for the water pump. I don't recall other colors off the top of my head.

The white wire is the ground.

I'll see if I can find the diagram at home.
lojoma is offline   Reply With Quote
Old 07-09-2021, 07:00 AM   #3
2 Rivet Member
 
1973 23' Safari
Germantown , Tennessee
Join Date: May 2021
Posts: 28
Here's the diagram. I added the color. The bottom right (sorry not very legible) drawing of mine shows the colors of wires on the other side of the connector.

Again this is for '73 but my guess is it's very similar.
Attached Thumbnails
Click image for larger version

Name:	IMG_8571.jpg
Views:	6
Size:	339.7 KB
ID:	399108  
lojoma is offline   Reply With Quote
Old 07-10-2021, 05:08 AM   #4
2 Rivet Member
 
1972 29' Ambassador
East Moriches , New York
Join Date: Jun 2015
Posts: 33
Thank you ... that will come in handy ... I actually ended up rebuilding a new panel from scratch. I ordered new tank sensors from Amazon and actually talked to the company first they were incredibly helpful. Then rebuild all lights, put in phone charger, dc meter, and old style battery clock and weather gage. the tank sensor has panel for 3 tanks, and a prior owner installed a GREY tank so this is a bonus. as we know prior to 1975 no grey tanks.
72TINCAN is offline   Reply With Quote
Old 07-10-2021, 05:12 AM   #5
2 Rivet Member
 
1972 29' Ambassador
East Moriches , New York
Join Date: Jun 2015
Posts: 33
this is the final product just need to label and ad logo
Attached Thumbnails
Click image for larger version

Name:	final control panel.jpg
Views:	7
Size:	297.5 KB
ID:	399193  
72TINCAN is offline   Reply With Quote
Old 07-21-2021, 10:13 PM   #6
2 Rivet Member
 
1973 23' Safari
Germantown , Tennessee
Join Date: May 2021
Posts: 28
Quote:
Originally Posted by lojoma View Post

Mine has two +12v connections. One is a grey wire that doesn't go directly to the board. The other is a red wire that comes from the wiring harness. The grey one (with a working Univolt system) supplied power to the panel when connected to shore power. The grey wire connects to a white end of one of the bulb fixtures and lights up when on shore power to confirm you are using shore power. The current goes through that bulb and then to another switch (the ammeter maybe?) and then on to supply the circuit board via a purple wire that connects near the fuse. If you are on battery power, the red wire supplies power directly to the circuit board, also near the fuse.
.
I know this is now a finished issue, but in case others happen along and read this, I was incorrect about the grey and red wires. I found an old post (by Airstream Andy) that explains their function better.

The "power on" bulb doesn't have a ground at all. It basically comes down to it has +12 DC volts coming into BOTH wires of its socket. When on battery power, both red and grey wires have +12 DC volts going into the bulb. Since there is no voltage difference, the Power On light doesn't glow. When on shore power, the old Univolt would send AC (12 volts, I suppose) to the grey wire. Since the voltage isn't constantly the same on both sides of the bulb, it lights.

I thought this was interesting and pretty clever.
lojoma is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
1969 Tradewind control panel wire diagram? Sardog Electrical - Systems, Generators, Batteries & Solar 1 05-26-2014 02:04 PM
Gray wire (for power light on control panel) ??? Tweb Batteries, Univolts, Converters & Inverters 2 04-21-2014 12:10 AM
Control Panel Wiring Diagram Grider Batteries, Univolts, Converters & Inverters 1 05-24-2010 05:16 PM
Dometic Penguin A/C Control Panel Board Saigon Furnaces, Heaters, Fireplaces & Air Conditioning 1 06-05-2004 10:55 AM
Wire ,wire, oh wire can it be ? 69 Silverback Electrical - Systems, Generators, Batteries & Solar 8 05-15-2003 11:09 AM


Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.



All times are GMT -6. The time now is 05:11 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.