SPEEDOMETER

Energy One

BWG56

Guru
The speed sensor is reading the teeth in the gears in the tranny, from the sensor it sends a signal thru the control module, whether it be the ECH or TH and then the module sends the pulse to the speedo, which in turns moves the needle on the speedo
 

francoblay1

The Spaniard
Speedo does not work, sensor burnt up. I've got the sensor disconnected and turn signals self cancel like they're supposed too. I'll replace the sensor in due time but meanwhile my sigs do what they're supposed to do and cancel. Don't know why or how, I've read somewhere that this is part of the ECH, TH module. First time that I've ever heard that it's part of the speed sensor. Neutral safety switch maybe, because It does not cancel when in neutral at a light or stop.
Forfucksakes........do you need me to fly over????
 

bruce

Active Member
Hi to everybody just signed up
I have a 2008 BD Mutt bought new, with about 15,000 miles. Lats weekend I went to a stude club meeting and everything was fine. On the way home my speedo needle pegged on the high side and in the odometer also was running way fast, in about 8 miles it registered about 500 miles. I discounted the seeding unit and the tach worked but no speedo which is what I expected. reconnected it and the same problem.
Any suggestions
thanks
nick
the wires inside on circuit broad come unsoldered on the inside of the speedo, is and was very common. I am not any good at this new site, but there are some how-toos on here with photos if you can find them. If you want more help you are welcome to call me 717-382-9983 - bruce

OK, go to forum - then search - type speedo in search - and pick HOW TO near bottom on page, near bottom of first page you will find.
 
Last edited:

Srodden

Well-Known Member
Not aware of any. The speedo and tach are separate assemblies.

I personally am not a fan of the digital speedo's. Screams 80's to me. There are analog options too.
Ya I really like the original medallion in my 2011 mastiff !
 

BWG56

Guru
the wires inside on circuit broad come unsoldered on the inside of the speedo, is and was very common. I am not any good at this new site, but there are some how-toos on here with photos if you can find them. If you want more help you are welcome to call me 717-382-9983 - bruce

OK, go to forum - then search - type speedo in search - and pick HOW TO near bottom on page, near bottom of first page you will find.
I just took an old one apart and they are not repairable, the chrome ring is crimped around the plastic cup, my wires were good but the speedo tool a crap and wouldn't read mph
IMG_1233.JPG

you can see the red,green and black wires at the top of the lower pic
IMG_1234.JPG IMG_1235.JPG
 

Sven

Well-Known Member
I'd first interject the 'chemical reaction' which electricity shows as this byproduct say. Heat and magnetism are your other actions. So chemically speaking, red lead, green lead ends look brown and cooked on that round motherboard. What would happen if you remelted the lead, boiled the chemical off the contacts, made a new power entry, a new ground; she starts working again?

You've got nothing to lose short of measuring every part on the board, but it looks clean, no burned spots, sans the red/green leads entering that m-board.
 
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