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Old 09-08-2017, 04:23 PM   #15
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1974 20' Argosy 20
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Originally Posted by WayneG View Post
I tried the PM to shepherd57 and no reply yet. If anyone has a bad or unneeded module I will pay for it so I can reverse engineer it and post a schematic
John's a fairly busy guy. I'm pretty sure Tony (Isuzusweet) stays in touch with John so you might try contacting Tony to see if he's heard from him lately.
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Old 10-19-2017, 06:27 PM   #16
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1984 34.5' Airstream 345
Foothill Ranch , California
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Old 10-19-2017, 06:39 PM   #17
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1984 27' Airstream 270
Scotia , New York
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It is possible, Mine had the wires potted into the module, yours has a connector. Yours also looks like it is mounted on the firewall near the rectifiers (I forget what they go to)
Mine is a stack of 2 modules hot glued to the dash between the speedometer and Tack.
You may either have the "left the lights on buzzer" or maybe the cruise control electronics?

Also interesting the date on this is Feb 1984, that means your rig was not built in 83 claiming to be a 84 model year like mine.
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Old 10-19-2017, 11:43 PM   #18
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Sorry for the crummy pic.
I’m home now so can post more info.
There was nothing between my speedo and tach that resembled you previous post.
This unit looked the most likely candidate and was mount to the steering column support I think, but it does not have a plug... the wires just disappear into the unit, and 4” or so away, they disappeared into a taped up blob. I cut that away and found multiple crimped(badly) connections into the harness.
I will let the pics do the talking....
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I have no idea if the above unit it’s not it... I saw multiple other stuff that I was puzzled by Ike this thing!
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I heard that it’s a nightmare behind there but mine is really ugly with lots of disconnected plugs, switches and free hanging wire that I intend to deal with before I begin driving this thing.
Speechless...
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Old 10-20-2017, 03:30 AM   #19
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Yours does not look so bad, mine has/had lots of splices that I assume Airstream did when it fitted the dash to the chassis. (First photo)


That could be one of the modules for the sensor lights but it does look different from mine.
If you zoom in on the second photo you can see where I labeled my modules. Note the blue connectors, I put them in to make dash removal a bit less insane of a task. A close up is in the 3rd photo)

I went a bit crazy with dash mods, Pop up LCD radio screen with video switching for two rear view cameras, digital dash dimmer.

This is my reworked schematic in PDF form http://theouterlimits.ws/projects/ai...d%20Wiring.pdf
You need to zoom in to get any detail.

That relay you found is probably the dead bolt relay, that is the only relay that was glued to my dash. I see a unhooked bare ended wire in that photo, I just love to find them and be clueless as to where they go, if anywhere!


BTW, almost everything on my dash was originally put in with a hot glue gun, including the relay, switches and indicator lights, many of them were coming loose. (4th photo)
When I went to upgrade to LED's, hot glue was what I used, just a stronger version.
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Old 11-01-2017, 06:17 PM   #20
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Ok. At Motorhome today and found another box.
This one is bigger and was screwed to the forward part of the dash under the heater duct. I couldn’t reach the score so I just pulled on it and a piece of the frame broke off, but I don’t care!
The unit is potted in resin by the look.

Here are some pics.
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Here are the wires where it crimps into the harness.
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Maybe you can ID it based on the wire colors.
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Old 11-01-2017, 08:36 PM   #21
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Just checked. That is it.
I cut it out.
Some wires were disconnected anyway.

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Old 11-02-2017, 01:06 AM   #22
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That one should be the fluid sensor module.
here is a closeup of my dash schematic showing the wiring colors.

I guess crimping was Airstreams "cheap way out" to connect the dash components. I would have used connectors, and I did do that for my rebuild.
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Old 11-02-2017, 03:58 AM   #23
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Wayne,
Electronics are black magic to me, so how do you reverse engineer something like this, that is “Potted” in resin????
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Old 11-02-2017, 04:29 AM   #24
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Wayne,
Electronics are black magic to me, so how do you reverse engineer something like this, that is “Potted” in resin????
That is where it gets tricky. If it is a dead module then caution is not as critical.
The bulk of the epoxy can be gouged out and I have solvents that work to dissolve epoxy or I can use heat to help soften and chip away the remainder around the components.
All 3 of these procedures have a fair probability of wrecking the circuitry in a good module, that is why I would prefer to not like to play with one that works.
If lucky, there may be silk screening on the PCB board inside the module that hints at the component values, otherwise if the parts are not marked there will be a lot of guessing and measuring of component values and transistor specs.

I work (semi-retired) in a nuclear accelerator laboratory in a University where many of the things we work on are ancient and parts are no longer available, so we have to get creative to duplicate the functions.
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Old 11-02-2017, 04:32 AM   #25
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Ok. Pm me your address and I will send you this one!
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Old 11-02-2017, 05:27 AM   #26
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Ok. Pm me your address and I will send you this one!
PM sent
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Old 11-02-2017, 09:25 AM   #27
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Got it.
This module is bad I think.
Lights that are on on my dash include:
Water in fuel
Coolant level.
Washer fluid level.

I will get it in the mail to you ASAP!
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Old 11-02-2017, 09:41 AM   #28
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Got it.
This module is bad I think.
Lights that are on on my dash include:
Water in fuel
Coolant level.
Washer fluid level.

I will get it in the mail to you ASAP!
I will be looking for it and get it in the shop for reverse engineering.
BTW those are the same lights that come on on mine but intermittently.
I tried everything outside the module to cure it and nothing has worked so I think it must be a design flaw in the module. The Po on mine just taped over those dash lights, that is not my style.
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