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More on VDO Gauges

 
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Flying Duck
PsyKotic Waterfowl


Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA

PostPosted: Mon Nov 02, 2009 5:33 pm    Post subject: More on VDO Gauges Reply with quote

Bought the gauges this summer. Finally got around to installing them last week.

I had a Kuryakyn LED voltmeter hidden in the fairing but I wanted something that would give me actual voltage. I also wanted an ambient temperature gauge so I know when the temperature is at/near freezing in the winter so I know if there's a potential for frost/ice on the road. I figured I'd also replace the fuel and temp gauges with VDOs so that all of the gauges would match.




Step 1: Wire them up. I used some connectors I got from FleaBay for $1 each and instead of using blade terminals I soldered the wires to the terminals and covered them in heat shrink tubing. Instead of having separate wires for the gauge power and backlighting I just used the green/black wire to power both.




Step 2: Make a wiring harness. Using the other halves of the connectors,for the two I put up in the dash(fuel and ambient temperature,) I replaced the factory wiring harness(above) with one that I made. (below) The side ones each have their own wiring.




Step 3: Drill holes for the ones in the knee panels. I used a 2" hole saw for this. When drilling the second one I put the two knee panels together so the gauges would be symmetrically positioned.

I'll skip the details on the fuel and temp gauges since that's been covered before.

Voltmeter: This has a calibration screw so I put my multimeter on the battery terminals and calibrated it to that so it should read pretty close to the actual voltage at the battery.

Ambient temperature gauge: This baby is $pendy. MSRP is about $135 or something. I got it at egauges for a bit under $90. It does include the sensor though. It's got a marking right at 32 which is perfect for my purposes.




Snice I have a Stebel Nautilus air horn where the right horn used to be, I mounted the temp sensor where the left horn used to be and used it's wiring to ground the temp sensor.




So, everything was ready to go, right? Wrong. Even though the ambient temp gauge and it's sensor come together as a pair in the same box that gauge was reading about 8 degrees high. It doesn't seem to have any way to calibrate it so I was a bit miffed about that. Fortunately it was reading high though, not low, so by adding a $3 adjustable micro potentiometer from Radio Shack I was able to add my own way to calibrate it by slightly increasing the resistance from the sensor. Now it's perfectly calibrated. (But it's BS that I had to do this IMO.)




And of course they are all backlit with red LEDs to match the instrument cluster.




That is all.
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Stoked Steve
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Joined: 01 Sep 2004
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Location: Virginia Beach, VA

PostPosted: Mon Nov 02, 2009 5:39 pm    Post subject: Reply with quote

Sweet!
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Scott_Anderson
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PostPosted: Mon Nov 02, 2009 6:39 pm    Post subject: Reply with quote

Duck, sure it wasn't reading high just because it was inside the fairing?

I realize that mounting any temp sensor on a bike is questionable at best.
Inside the fairing and it's protected from the wind, yet will pickup engine heat.
It's not easy to find a spot on the outside that won't be affected by the "wind chill" effect when the bike is moving.
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Flying Duck
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Joined: 27 Jan 2005
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Location: Bumf***, WA

PostPosted: Mon Nov 02, 2009 6:44 pm    Post subject: Reply with quote

Scott_Anderson wrote:
Duck, sure it wasn't reading high just because it was inside the fairing?


Bike was cold so the temp sensor was just feeling the ambient temp. I checked it against the temp on my dad's Town Car in the same garage and also another digital thermometer which both agreed that the VDO one was about 8 degrees high.
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86 K75C w/paralever, hi perf cams,TURBO!
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Ernie-NH
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Joined: 14 Oct 2009
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PostPosted: Mon Nov 02, 2009 7:04 pm    Post subject: Reply with quote

Hi Duck...

NICE looking and functional gauge setup !! I've got just a quickie question.. Since you've been re-routing wires, I've got a burned out "neutral" lamp in the instrument pod... HOW do I get to it without removing the faring ?? Or must one remove the fairing to do anything back there ??

Best regards, and thanks in advance for any advice you can offer !

ernie-NH
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Scott_Anderson
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PostPosted: Mon Nov 02, 2009 7:32 pm    Post subject: Reply with quote

Ernie,
the isnt pod on the LT isn't that hard to get out.
It is easier to remove if you remove the windscreen assy out of the way.
After that there's just 4 mounting screws for the pod and 1 screw in the center of the wiring plug.
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1997 K1100LT 0302488
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Ernie-NH
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PostPosted: Mon Nov 02, 2009 7:41 pm    Post subject: Reply with quote

Hi Scott..

OK... Thanks for the tip.! I can feel the pod mounting screws but can neither see them or get my tools on them without better access and now that you tell me to remove the screen panel etc... thats what I'll try... will let you know in a PM !

Thanks again............// Ernie-NH
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Scott_Anderson
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PostPosted: Mon Nov 02, 2009 8:57 pm    Post subject: Reply with quote

You will have 6 screws to remove from the inner panel, 2 on each side with 2 under the map light area, and 6 on the front side.

Once you have it loose there will be a quick connect wire connector to take apart and that's all there is to remove the screen assy.

You do it a few times and you can have it out in less than 5 minutes.
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1997 K1100LT 0302488
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
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SugarHillCTD
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Joined: 10 Oct 2007
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PostPosted: Mon Nov 02, 2009 9:13 pm    Post subject: Reply with quote

Duck,

Really nice install.

Looks great.
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Mystic Red
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Joined: 28 Mar 2005
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PostPosted: Mon Nov 02, 2009 9:43 pm    Post subject: Reply with quote

Quote:
It's not easy to find a spot on the outside that won't be affected by the "wind chill" effect when the bike is moving.


Scott, inanimate objects do not experience wind chill otherwise we would not need wind chill charts. Wink
Duck, that's an awesome job there. I love the temp gauge and the fact they all match. That must be on your RS, right?
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Flying Duck
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Joined: 27 Jan 2005
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Location: Bumf***, WA

PostPosted: Mon Nov 02, 2009 9:55 pm    Post subject: Reply with quote

Mystic Red wrote:
Quote:
It's not easy to find a spot on the outside that won't be affected by the "wind chill" effect when the bike is moving.


Scott, inanimate objects do not experience wind chill otherwise we would not need wind chill charts. Wink
Duck, that's an awesome job there. I love the temp gauge and the fact they all match. That must be on your RS, right?


Yep, the RS. Thanks.

If you get a temp sensor wet, the warmer molecules at the surface and the Van der Waals forces that keep them around can be overcome by wind thus reducing the temperature of the water remaining on the snesor. As human beings, we're constantly producing warmer moisture so the impact of wind chill will be greater but I suspect that it happens to some extent with inanimate objects as well.


(But it's been years since I studied thermodynamics and chemistry so I might be wrong.)
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93 LT (x2)
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86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
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Saltcreek
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Joined: 22 Oct 2008
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PostPosted: Mon Nov 02, 2009 10:05 pm    Post subject: Reply with quote

I also am interested in an ambient temperature gauge but not at that price. Has anyone found anything inexpensive that works well?
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Mystic Red
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Joined: 28 Mar 2005
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Location: Twin Lakes Idaho

PostPosted: Mon Nov 02, 2009 10:31 pm    Post subject: Reply with quote

Quote:
If you get a temp sensor wet, the warmer molecules at the surface and the Van der Waals forces that keep them around can be overcome by wind thus reducing the temperature of the water remaining on the snesor. As human beings, we're constantly producing warmer moisture so the impact of wind chill will be greater but I suspect that it happens to some extent with inanimate objects as well.


Agreed, but at the temps you're worried about there should not be the wet .My point is if you have an engine, let's say, sitting in -29 dg with a 40 MPH wind, that engine is going to be -29 and no lower.
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2xcelr8
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PostPosted: Mon Nov 02, 2009 11:33 pm    Post subject: Fuel Sending Unit Reply with quote

What is the resistance for the fuel sending unit. I am looking at replacing the gauges in my '94 LT
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Flying Duck
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Joined: 27 Jan 2005
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PostPosted: Tue Nov 03, 2009 12:05 am    Post subject: Reply with quote

Mystic Red wrote:
Quote:
If you get a temp sensor wet, the warmer molecules at the surface and the Van der Waals forces that keep them around can be overcome by wind thus reducing the temperature of the water remaining on the snesor. As human beings, we're constantly producing warmer moisture so the impact of wind chill will be greater but I suspect that it happens to some extent with inanimate objects as well.


Agreed, but at the temps you're worried about there should not be the wet .My point is if you have an engine, let's say, sitting in -29 dg with a 40 MPH wind, that engine is going to be -29 and no lower.


And if you're riding a murdersickle at -29 you should be dead already. Rolling Eyes
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE
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Flying Duck
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Joined: 27 Jan 2005
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Location: Bumf***, WA

PostPosted: Tue Nov 03, 2009 12:07 am    Post subject: Re: Fuel Sending Unit Reply with quote

2xcelr8 wrote:
What is the resistance for the fuel sending unit. I am looking at replacing the gauges in my '94 LT


Do a search here on "vdo fuel" and you'll find your answer.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE
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Mystic Red
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Posts: 2330
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PostPosted: Tue Nov 03, 2009 7:29 am    Post subject: Reply with quote

Quote:
And if you're riding a murdersickle at -29 you should be dead already. Rolling Eyes


Very Happy Very Happy
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