Hey Man, great video... you are spot on with the diode resistor combo.. I tried everything to get my Drag specialties mini tach to read full RPM not just half . All but ready to give up.. everyone including whi I bought it from telling me it's the wrong tach that it won't work.. but it worked thanks to your set up.. much appreciated and mine bike is a single fire. 2015 Street Bob FXDB

Perfect description and easy to follow

Perfect! Just installed on a sportster 1200 from 2008

@Alpha-ww8co

7 ай бұрын

Do you get accurate reading bro?

Thanks so must this was a very helpful video

Nice install

Nice, thanks for the Video

Thanks. Very nice.

Hello. Which diode and resister do you think I need for my Suzuki Intruder 1400? Not even with the net I can make my RPM gauge work at all! If you could PLEASE help me out I’ll appreciated very much. Thanks in advance

@CarlRecktenwaldJr

6 жыл бұрын

+Paulo Silva which tach did you buy? You should have something showing on the tach. Might want to check all your connections and ensure yiu have good power and ground.

Great tip, to bad they rarely put tach's on the bike from the factory anymore.

@CarlRecktenwaldJr

7 жыл бұрын

+walkingman I agree, sees like a simple and easy task no a days to have a tach.

@jefft8138

5 жыл бұрын

Especially when service manuals require rpm specific procedures.

So with a tach made for a single fire coil, will any wiring change or will it just read more accurately?

@CarlRecktenwaldJr

7 жыл бұрын

+matthew hoehn single fire coil tach will regulate no wiring changes and yes it will read more accurate.

Really useful video! Is this circuit that adapt the 2 coil wires into one universal for HDs? I'm thinking in try this in my Sportster! Congrats!

@CarlRecktenwaldJr

7 жыл бұрын

+Rafael Pontes I do believe that the circuit is universal for Harley. They sell a tach made specifically for a dual fire system. I just bought the wrong one.

@rafaelpontes5786

7 жыл бұрын

Thanks Carl! I will try this setup later!!

what kind of windshield you used on your bike..any help for this..thanks

@CarlRecktenwaldJr

7 жыл бұрын

+Raymond Montepio I got the Harley specific windshield. Purchased From Harley Davidson.

There is a factory speedometer with a built in tach on the LCD display. Cycle the push button on the speedometer to see if you have the tach display.

@CarlRecktenwaldJr

3 жыл бұрын

Mine did not. I think the new ones have that option.

@mohamedmustafa8583

3 жыл бұрын

Thanks Carl, good video, just wanted to make people aware that some 500s and 750s have the built in tachometer. Don’t know if you can swap out the speedometer to get the function. I’d rather look at an analog gauge, but the LCD tach maybe OK for some.

@CarlRecktenwaldJr

3 жыл бұрын

Great point. Appreciate that feedback.

Hello Carl, can you tell me what you used as a signal wire for your tach install

@CarlRecktenwaldJr

3 жыл бұрын

There is a trigger wire at the cool pack. I tied into that.

I mounted the same tach to my 2015 750 street and the gauge is moving around a lot and when im running about 4000 rpm the gauge is bouncing from 3500 to 4000 the bike is not surging any ideas ?

@CarlRecktenwaldJr

7 жыл бұрын

+Brad Brock mine bounces around at low rpm. Not totally sure why as with smooth and even throttle mine steadies out.

Hi I own a 2018 street750 in India I want to know can i fit the iron 883 s analog digital combo meter in my bike? Cz i badly need a fuel gauge Or do you have any fuel gauge idea? Plz help

@CarlRecktenwaldJr

6 жыл бұрын

It might fit, however there is no fuel sending unit in the tank so it would not be an easy fix.

Hi, I note you say that you connected it first but it was only showing half revs. How did you connect it at first? I have two cables coming from the écu and connecting the yellow cable to either just the front or rear coil, I get no revs whatsoever? Any ideas?

@CarlRecktenwaldJr

2 жыл бұрын

I connected it directly to the output wires of the coil. That showed half revs. Than I add the resistor / diode combo. What model / year do you have ?

Hi I bought similar rpm meter but I have two cables for light(black and red) And three cables for rpm work (black,green and yellow) How to install these?

@CarlRecktenwaldJr

4 жыл бұрын

What brand? Light wires will be power and ground. My guess is the other 3 are ign ground and coil.

Yes Carl I did try a commercially available tach adapter but it did not work at all. Then I tried the one that you made but I was unable to buy the exact value of components and tried that but it did not work either . So I just gave up until I saw your installation. How do we get in touch with one another but not through Utube? William Barnier

@barryelias697

7 жыл бұрын

William Barnier did the new one you made work

@williambarnier9094

7 жыл бұрын

no. not at all.

@CarlRecktenwaldJr

7 жыл бұрын

+William Barnier you can send me an email. The link is on the web page link in the video description.

Hi there great video... just had a couple of questions if that's ok... 1. The x2 cables that you connected the Resistor and Diod to, are they power supply to Ignition Coil Front and Rear? 2. The Ground wire that you mentioned which is linked to the back of bolt that passes through the Ignition Coil Mount, I presume the other end of this cable is coming from Tachometer? I have a 2013 XL883L Sportster and am looking to install a LCD Digital Multifunctional Speedometer from China...the interesting thing is that on the Speedometer you have to select the number of Cylinders on the Bike? Im from London, UK any advice would be much appreciated before i get stuck into this project... Thanks and season greetings...😊

@CarlRecktenwaldJr

6 ай бұрын

It’s 2.

I tried this, exact same bike but different tach. First try it read 0rpm on my tach. Second try it still read half the rpms and the engine light came on. Seems like it wasn't firing correctly. I used the exact same materials but it isn't working. Any advice?

@CarlRecktenwaldJr

3 жыл бұрын

Did you try it with out the resistor and diode setup? Maybe the tach is set up for dual fire?

Mine has five wires, little black one big black one, green red and a yellow black stripped one

@CarlRecktenwaldJr

5 жыл бұрын

Not sure. What year? My 15 service manual does not show that.

Carl. I am using the same tach on my 2016 Triumph Street Twin and of course I have the same problem you encountered. It only reads at one half rpms. Would you be willing to make up another wiring adapter with the correct resistors and such for me? I would gladly pay you what your time and parts are worth. I am not able to duplicate your results and am severely electricly challenged. Please help me. Bill B.

@CarlRecktenwaldJr

7 жыл бұрын

+William Barnier did you make the resistor setup? I can put one together for you.

@williambarnier9094

7 жыл бұрын

I tried but mine didn't work. I would really appreciate it if you could put one together for me Carl. I will pay you what ever seems fair to you for your time and trouble + shipping of course. Bill Barnier

@CarlRecktenwaldJr

7 жыл бұрын

+William Barnier ok the parts are cheap but have you looked at a commercially availed tach adapter ? With mine I do get a little tach bounce as the diode resistor setup is a little leaky. Either way just wanted to make sure you were aware that there are commercially available adapters.

I've fitted this exact tacho to a 2004 Sportster and intermittently it flicks to double rpm. Mostly reads correct but then sometimes reads double. I soldered to the coil wires and used the diode and resistor circuit. My earth wire is to the earth on the lighting harness for the pilot bulb. Any idea what could be wrong?

@CarlRecktenwaldJr

Ай бұрын

Has it always done that flickering? If it just started it might be the diode or resistor going bad.

@tokairic3925

Ай бұрын

@@CarlRecktenwaldJr I have only just fitted the tacho so everything is new. It was fine for a few miles then I noticed it would sometimes read correct and sometimes double rpm. I think maybe the resistors are letting some intermittent continuity between the two coil wires making the tach behave like it has two dual fire coils connected. What are the resistors for? Could I just run with the diodes?

@tokairic3925

Ай бұрын

So now I've tried using just the diodes without the resistors but no reading at all on the taco. I refitted a pair of 100k resistors across the diodes and tried again. Up to now its reading what seems like correctly, but may be a bit low. I'll see how it goes when I ride it again...... I read on one of the forums that the crank position sensor can trick the ecu into behaving like a dual fire on start up if the ecu doesn't read it correctly. Don't think there will be a cure for that.

Nice work! Should have had this right from the factory! What's the redline just out of curiosity?

@CarlRecktenwaldJr

2 жыл бұрын

8000 it was Harley had listed as. 58hp at 8000.

@Stevel_

2 жыл бұрын

@@CarlRecktenwaldJr Nice; perfect tach for the job then!

Would you consider installing the tachometer for a price on my 750

@CarlRecktenwaldJr

6 жыл бұрын

You live in MD?

@georgesienny7003

5 жыл бұрын

Carl Recktenwald Jr. No I live in the northern part of West Virginia probably about five hours away from you ,I like your set up too bad we weren't closer ! have a nice day

So Carl, two questions;1. Are you saying that P/N: TR-493374, from this video, is the WRONG part? And....2. That a "single fire coil tach" will work?

@CarlRecktenwaldJr

6 жыл бұрын

+John M. Yes and yes. I looked at the wiring diagram and assume that the coil was dual fire. However after I got the tach I realized the tach was reading wrong and then learned that for the street you need the single fire tach and then you won't need to add the mod of resistor and diodes.

What is the voltage of the resistors you used

@CarlRecktenwaldJr

7 жыл бұрын

+Brad Brock Voltage? The resistor value is 100k 1/2 watt

@CarlRecktenwaldJr

7 жыл бұрын

+Brad Brock Voltage? The resistor value is 100k 1/2 watt

Hello Carl..my name is Lourival and I'm from Brazil...yestarday i tried to instal this tacomether in my Suzuki Boulevard M50 according this electric scheme, but tacomether show me only a half RPM..can you help me?

@CarlRecktenwaldJr

4 жыл бұрын

Did you use the resistor diode setup?

@jacaretigrao

4 жыл бұрын

@@CarlRecktenwaldJr yes...i used diodes 4007 and resisters 100k.

@CarlRecktenwaldJr

4 жыл бұрын

Ok. Try taking those diodes and resistors out as you might have a single fire system.

@jacaretigrao

4 жыл бұрын

@@CarlRecktenwaldJr I removed the resistors and diodes and plugged in the negative of the 2 coils, nothing has changed, is the tachometer only for single fire system?

@CarlRecktenwaldJr

4 жыл бұрын

Read this it talks about single fore and dual fire coils. I am not sure what the M50 has. roubert.name/joakim/tach/

What and where can I get the resister and diode? This part is confusing to me.

@CarlRecktenwaldJr

Жыл бұрын

Digi-Key or mouser.

@Dougiegilbert

Жыл бұрын

@@CarlRecktenwaldJr I have no idea what to look for with this.

@CarlRecktenwaldJr

Жыл бұрын

Just diodes and a resistor.

Please also install a fuel meter and make a video on it

@CarlRecktenwaldJr

7 жыл бұрын

+Sumit Ojha I wish Harley would sell an aftermarket kit, with tach, gear and fuel...

@sumitojha

7 жыл бұрын

Carl Recktenwald Jr. Are you able to make something for that

@CarlRecktenwaldJr

7 жыл бұрын

+Sumit Ojha Not sure, there is no fuel float so the only thing you could make is a computer based device that uses miles driven to show fuel use.

@sumitojha

7 жыл бұрын

Carl Recktenwald Jr. We can use trip meter for that... Reset trip meter every time I refill the fuel tank

@CarlRecktenwaldJr

7 жыл бұрын

exactly.

What year bike did you put this on?

@CarlRecktenwaldJr

3 жыл бұрын

2015 Street 750

@joshuagrant4608

3 жыл бұрын

@@CarlRecktenwaldJr I just got the same bike. Is it dual or single fire?

@CarlRecktenwaldJr

3 жыл бұрын

I seemed to remember it as a single fire which is why I needed to add in the resistor / diode setup.

@joshuagrant4608

3 жыл бұрын

@@CarlRecktenwaldJr is this something that someone with basic knowledge can do or should I take to a shop? I need to buy the tach and the adapter?

@CarlRecktenwaldJr

3 жыл бұрын

You can buy a tach design for single fire and not need the adapter.

What a hack job on that wiring....

anyone else get it to work.

If you made some instructions that could be UNDERSTOOD you would be a legend. The current chinglish is at best pure rubbish.

@tokairic3925

Ай бұрын

I don't know where you get this from. The explanation is fine. If you turn off the sound you can still follow the install from the pictures its so clear.

Very interesting Thanks a lot