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[Twolanerider]

Howie, just thought of one other potential "thing."  Is the part number for the gauge you provided a complete unit or is there some outer trim ring that's separated from the center gauge assembly?

[Fired00d]

.....

Also took the Clymer manual with its several years schematics to the thrown and studied for several minutes.   It makes it look like the same three wires are used for sending unit functions from 02 to 05 (book doesn't go past 05).  It also makes it look like there's a pinout difference in where those wires are placed in the AMP connector.  But, if that's correct, it's no big deal.

.....

I don't know what is worst..... he misspelled "throne" or he told us he took the book to the throne.... either way.... TMI!!!!!!

 
Ride Safe,
Fired00d
 

[Buy early]

It is a good part number Mark.  Just checked it at Chicago HD. Now in a B revision so they've even corrected a few generations of problems from the original.  $116 at Chicago HD.

Also took the Clymer manual with its several years schematics to the thrown and studied for several minutes.  It makes it look like the same three wires are used for sending unit functions from 02 to 05 (book doesn't go past 05).  It also makes it look like there's a pinout difference in where those wires are placed in the AMP connector.  But, if that's correct, it's no big deal.

At least from an electrical perspective I can't see anything in these Clymer wiring diagrams that would keep a gauge that is functional in an 04 or 05 bike from working in an 02-03.  For that matter I also didn't see a resistance lead anywhere in the harness that would necessitate the resistor you described to change the impedance.

Am wondering now if the difference is in some way physical but that seems not to be the case either.  03-07 Road King tanks are the same.  There is a difference between 02 and 03 on the bottom.  But Kuryakyn's gauge fitment is 02 and up so any physical difference shouldn't involve the hole for the gauge.

Maybe the termination point is different between 02-03 and 04-07?  So the length of the harness from the gauge is different?  That wouldn't be obvious in the schematic but would account for a fitment difference the way Harley needs this stuff to be plug and play for the masses.  If so that's easily altered as needed.

Once again still don't know for sure what it is we don't know.  But the wiring diagram I looked at, combined with knowing the sending unit is the same in 02 and 05, makes it look like any gauge that functions in an 05 should function in an 02.  Even without the resistor you found yourself forced to add (as notoriously inaccurate as these things are also have to wonder if the resistor might be adjusting for normal inaccuracies too).

Thought it had something to do with the efficiency of the LED's vs. the efficiency of the old guage type - you had to step down the power to the LED's as they were more efficient and were overdriven without the resistor.

[Twolanerider]

Thought it had something to do with the efficiency of the LED's vs. the efficiency of the old guage type - you had to step down the power to the LED's as they were more efficient and were overdriven without the resistor.

The whole bike is still just a 12v DC system.  And there's no resistance leads nor resistors themselves shown in the harnesses of either model.  So if such a thing were to be needed I'd expect it built in as part of the PCB on the gauge unit itself.  That'd be the most logical place for it (at least to me).

Didn't have much time spare today but did grab another wiring diagram to look at.  Could compare the diagram from the 05 EDM versus the same diagram in the 02 EDM.  At the sender/pump harness connection and at the gauge connection things are the same for the older and newer.

Where the leads go from there differs but they do the same things.  Pinout at the speedo is different between the earlier and later so the lead that takes instrument light power plugs in a different spot on the speedo, for example, and it looks like in one year the gauge is fused off an accessory circuit while the other it's fused off an instrument circuit.  None of those changes would affect the gauge operation though.

Only thing I did see different in the quick look I had time to take was in the 02 diagram the sensor feed was a home run from the sender to the gauge.  No taps and nothing in between.  In the 05 diagram the sensor feed also tapped off to the speedometer.  

Maybe that's for the low fuel idiot light in the speedo?  Just more I know I don't know so far.  Even if it were it would account for why the speedometers are different but not the fuel gauge.

May just have to plug the damn thing together some time when more parts are here and see what happens.  At least a sending unit and gas gauge can be checked remotely to see if things operate.

[Twolanerider]

I don't know what is worst..... he misspelled "throne" or he told us he took the book to the throne.... either way.... TMI!!!!!!

 
Ride Safe,
Fired00d
 

I know, typos are so unbecoming.... 

[Fired00d]

I know, typos are so unbecoming.... 

I'm just thankful we don't have "smell-o-net"

 
Ride Safe,
Fired00d
 

[Twolanerider]

I'm just thankful we don't have "smell-o-net"

 
Ride Safe,
Fired00d
 

Here's a (to me) interesting oddity.  Have noticed that type of typo with more regularity the last several months. 

We all apparently do sound alike typos occasionally.  But I've done them more than I used to.  Think it has something to do with the composition speed in my head no longer being at the same RPM as my typing fingers are used to. 

The hands still haven't (and won't) catch up to the pre-Uncle-Nubby typing speed.  So I'm occasionally bouncing between gears.  When I do weird spellings seem to happen .

[Fired00d]

Here's a (to me) interesting oddity.  Have noticed that type of typo with more regularity the last several months. 

We all apparently do sound alike typos occasionally.  But I've done them more than I used to.  Think it has something to do with the composition speed in my head no longer being at the same RPM as my typing fingers are used to. 

The hands still haven't (and won't) catch up to the pre-Uncle-Nubby typing speed.  So I'm occasionally bouncing between gears.  When I do weird spellings seem to happen .

Has nothing to do with digits or lack of.... I'm just as bad... we're just getting old... but you didn't hear me say it.

 
Ride Safe,
Fired00d
 

[Twolanerider]

Also, will someone with a 95-03 Road King or Softail tell me for sure if there's a low fuel idiot light in your speedometer?

[sadunbar]

Has nothing to do with digits or lack of.... I'm just as bad... we're just getting old... but you didn't hear me say it.

 
Ride Safe,
Fired00d
 

That's what I was thinking - I was just to polite to tell him that he is both finger deprived and old...  







(wait a minute - I think I resemble that remark...)

[Twolanerider]

Has nothing to do with digits or lack of.... I'm just as bad... we're just getting old... but you didn't hear me say it.

 
Ride Safe,
Fired00d
 

Actually.... I didn't.  Really.

[Twolanerider]

That's what I was thinking - I was just to polite to tell him that he is both finger deprived and old...  







(wait a minute - I think I resemble that remark...)

Dammit, so I got dummer when I wacked off part of the finger and older?  That's just not fair.

[sadunbar]

Dammit, so I got dummer when I wacked off part of the finger and older?  That's just not fair.

Could be you wacked off part of a finger because you got older.......   

[Twolanerider]

Could be you wacked off part of a finger because you got older.......   

Good thing I type slower now.  That was a straight line for an answer that might have got me neallified from the site .

[sadunbar]

Good thing I type slower now.  That was a straight line for an answer that might have got me neallified from the site .

yeah....good thing...