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Message started by Tacopimp on 10/21/19 at 09:41:40

Title: GPS Speedometer
Post by Tacopimp on 10/21/19 at 09:41:40

Has anyone here integrated a GPS Speedometer? I have been reading a lot of reviews on them and they are supposed to be more accurate than the analog speedos... Bonus is there are lots out there that have resettable trip odometers. If anyone is using one or has managed to fit one into the current space where the stock speedometer please let me know. Thanks!

Title: Re: GPS Speedometer
Post by Dave on 10/21/19 at 15:06:11

I adapted one from Speedhut.

It works well and is easy to hook up - you have to fabricate a mount, and I had to waterproof where the wires go into the housing.

I had photos in my build....they are all gone thanks to Tinypic closing.  I will see if I can find photos on my old computer.......it has been reluctant to come back to life.

Title: Re: GPS Speedometer
Post by Tacopimp on 10/21/19 at 16:07:19


477C7166777B60667D757867140 wrote:
I adapted one from Speedhut.

It works well and is easy to hook up - you have to fabricate a mount, and I had to waterproof where the wires go into the housing.

I had photos in my build....they are all gone thanks to Tinypic closing.  I will see if I can find photos on my old computer.......it has been reluctant to come back to life.


Cool thanks! I am wondering what the size of our speedo is, like what size I would need to fit it in there. There are a lot of these speedos on Amazon.

Title: Re: GPS Speedometer
Post by Dave on 10/21/19 at 17:19:00

I found it using Google.  Mine is the big diameter one from Speedhut, and it will be too big for the stock location.  Don't waste your time with the turn signal indicator in the Speedhut speedo - they are made for inside a car and are too dim to be seen in direct sun.

Title: Re: GPS Speedometer
Post by Tacopimp on 10/21/19 at 18:12:56


7E45485F4E42595F444C415E2D0 wrote:
I found it using Google.  Mine is the big diameter one from Speedhut, and it will be too big for the stock location.  Don't waste your time with the turn signal indicator in the Speedhut speedo - they are made for inside a car and are too dim to be seen in direct sun.


Nice. Thanks. Is the trip odometer pretty accurate?

Title: Re: GPS Speedometer
Post by SpamyToo on 10/22/19 at 02:59:56

I mounted one up front.  I love the GPS gauges. No fuss, no mess.  At the time I sprung for the speedhut, but I dont use the extra features.  If I did it again I would use a less expensive unit.


Title: Re: GPS Speedometer
Post by SpamyToo on 10/23/19 at 03:20:45

I should have had these LED Headlights, buckets and integrated GPS speedos ready by now, but the mold costs are killing me.  Hopefully sometime soon I will be offering them.  This is just one of the prototypes.


Title: Re: GPS Speedometer
Post by Tacopimp on 10/23/19 at 03:46:08


5E7D6C60745962620D0 wrote:
I should have had these LED Headlights, buckets and integrated GPS speedos ready by now, but the mold costs are killing me.  Hopefully sometime soon I will be offering them.  This is just one of the prototypes.


Interesting idea... Does it have a trip odometer that you can reset?

Title: Re: GPS Speedometer
Post by Dave on 10/23/19 at 05:40:10


5164666A756C6875050 wrote:
[quote author=7E45485F4E42595F444C415E2D0 link=1571676100/0#3 date=1571703540]

Nice. Thanks. Is the trip odometer pretty accurate?


How can I know?  What basis would I have for checking the accuracy?  It works well enough for me to know that I have used up enough fuel and that it is time to stop and get more.

You can get electronic speedometers at a far cheaper price - they generally use a magnet and sensor on the wheel, and once you have the unit calibrated it is accurate.

Title: Re: GPS Speedometer
Post by SpamyToo on 10/23/19 at 08:08:15

No it doesnt.  You can set the odometer to match your bikes mileage and actually reset the odometer if you needed to, but no separate tripometer. Thats just the ones we sell, others might.  

That is a nice way for checking mileage.

Ill see if I can get that feature incorporated in the next batch I get.

Dave, I wouldnt say far cheaper. Mine go for just over 1 bill.  Many of the sensor speedo's are about the same price and you have to run wires and zip tie it all, calibrate it and so on. The GPS is a power up and go deal.

Actually I suppose a bicycle proximity sensor speedo can be pretty cheap. But if your getting an Acewell or something its gonna cost still.

Title: Re: GPS Speedometer
Post by Tacopimp on 12/05/19 at 10:17:51

I found one on eBay with a resettable trip odometer.  Just wondering where people using a GPS speedo put the GPS antenna thing... I plan on putting the speedometer where the original one is located and maybe routing the antenna to the neck of the frame.

Also on the current wires that connect to the stock speedo, which is the Power +12V, Ground, and backlight?

Here is the one I bought:
https://www.ebay.com/itm/GPS-Speedometer-3-3-8-86mm-120-MPH-LED-light-black-black-001-SP-BB-GPS/254267198449?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

Thank you!!

Title: Re: GPS Speedometer
Post by Gary_in_NJ on 12/05/19 at 10:28:32

The antenna needs a clear unobstructed view of the sky and needs to be mounted parallel to the ground. The best mounting location would probably be the rear fender.

On a 2000 LS650, the gray wire is the speedo back light (+). There isn't a (12+VDC) that goes to the OEM speedo, but you can certainly get (12+VDC) from the battery. As always, black with the white trace is the secondary ground and the one used for all of the indicator lights.

Title: Re: GPS Speedometer
Post by Fast 650 on 12/05/19 at 10:36:37

If you just want it for the trip odometer, just grab the speedo from an Intruder. It mounts to the top tree instead of the tank though. And you will need either a cable extension or use a GT750 tach cable instead.

Title: Re: GPS Speedometer
Post by Tacopimp on 12/05/19 at 10:44:09


43494D474C454148161014240 wrote:
The antenna needs a clear unobstructed view of the sky and needs to be mounted parallel to the ground. The best mounting location would probably be the rear fender.

On a 2000 LS650, the gray wire is the speedo back light (+). There isn't a (12+VDC) that goes to the OEM speedo, but you can certainly get (12+VDC) from the battery. As always, black with the white trace is the secondary ground and the one used for all of the indicator lights.


Thanks for the reply.

So I don't have a fender on the back of the bike, so I will need to toy with some other options. I am sure I can figure out something.

As for the wiring... Run a wire directly from the battery for the 12+v? Don't tap from anywhere else? And if running from the battery, is like 18g wire ok, or do I need something heavier?

Thank you for all of your help.

Title: Re: GPS Speedometer
Post by Gary_in_NJ on 12/05/19 at 13:59:16

No, you will want a switched source. The head lamp (white) or tail lamp (brown) are always on when the bike is running. The eBay ad doesn't show the current draw of the unit, but I can't imagine that it's more than a few tenths of an amp.

You could also tap into the main switched power which is the orange wire from the keyed switch.

Title: Re: GPS Speedometer
Post by Tacopimp on 12/05/19 at 19:55:33


757F7B717A73777E202622120 wrote:
No, you will want a switched source. The head lamp (white) or tail lamp (brown) are always on when the bike is running. The eBay ad doesn't show the current draw of the unit, but I can't imagine that it's more than a few tenths of an amp.

You could also tap into the main switched power which is the orange wire from the keyed switch.



Awesome, thank you so much!

Title: Re: GPS Speedometer
Post by batman on 12/07/19 at 08:59:34

The white lead to the headlight isn't good to use as you'll lose power if you run the high beam , power to the front running lights could be used ,(gray wire from either turn signal ) and are much closer .

Title: Re: GPS Speedometer
Post by SpamyToo on 12/07/19 at 20:54:54

I think one side of the wires going to the horn is 12v.  I think the ground is switched. I believe thats where I had grabbed 12v at that time.

On the GPS speedos you can run switched 12v or some have constant 12v input also.  If you just use switched, the speedo will take maybe a couple seconds longer to find the satellites.  If you have the kind that has an input for battery, its supposed to remember the satelite locations, but I think the boot up response is minimally faster.

By the way I hope to have some GPS speedos for sale in the next month with tripometers and another version with an integrated tach.




Title: Re: GPS Speedometer
Post by Tacopimp on 12/07/19 at 21:02:45


4E6D7C70644972721D0 wrote:
I think one side of the wires going to the horn is 12v.  I think the ground is switched. I believe thats where I had grabbed 12v at that time.

On the GPS speedos you can run switched 12v or some have constant 12v input also.  If you just use switched, the speedo will take maybe a couple seconds longer to find the satellites.  If you have the kind that has an input for battery, its supposed to remember the satelite locations, but I think the boot up response is minimally faster.

By the way I hope to have some GPS speedos for sale in the next month with tripometers and another version with an integrated tach.


Cool. Thank you. Where did you mount your antenna?

Title: Re: GPS Speedometer
Post by Dave on 12/08/19 at 03:28:22

I had my antenna lead shortened, and I mounted the antenna on top of the front brake master cylinder.  It is attached with Velcro for when I need to service the brake.   The antenna is barely noticeable.

I did not connect the "memory" wire, as I did not want the constant draw on my LiIon battery........when I turn the bike off in the fall I can turn it back on in the spring and the battery is still charged.  The only downside is that when you go riding and are in the mountains, the GPS can't always find enough satellites to get started in the morning, and I have ridden 10 or 15 miles occasionally before the speedometer can find the data it needs.  I should have either wired in a switch - or a connector that was easy to get to and could be unplugged for long term storage.

Title: Re: GPS Speedometer
Post by SpamyToo on 12/08/19 at 07:18:19

As everyone said the best response is in plain view of the sky.  But I actually have mine double stick taped to the top inside of my headlight bucket and it works just fine.

Its out of sight and doesn't seem to have any bad effects, but I may be just lucky with this.  Your results might not be as good, but you can always try and change it if it doesnt work good.

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