VSS voltage/speed data?
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Outstanding HDF Member
Joined: Jan 2010
Posts: 2,916
Likes: 31
From: earth
VSS voltage/speed data?
Anybody have info on the vehicle speed sensor output voltage values relative to speed values. I want to build a speed activated switch that operates off the OEM VSS signal.Thanks.
Road Warrior
Joined: Dec 2008
Posts: 1,639
Likes: 2
From: Australia
The VSS is digital.
It sends a pulse each time a tooth goes past the sensor and the ECM counts the pulses and works out how fast the bike is going.
So you cant drive your switch with this sensor directly.
One way to do it would be to buy or make a shift light. The shift light counts the spark pulses and turns on the light when the count exceeds the set point. you could use that circuit to count the VSS pulses and operate a relay to do whatever it is you are trying to do.
It sends a pulse each time a tooth goes past the sensor and the ECM counts the pulses and works out how fast the bike is going.
So you cant drive your switch with this sensor directly.
One way to do it would be to buy or make a shift light. The shift light counts the spark pulses and turns on the light when the count exceeds the set point. you could use that circuit to count the VSS pulses and operate a relay to do whatever it is you are trying to do.
Thread Starter
|
Outstanding HDF Member
Joined: Jan 2010
Posts: 2,916
Likes: 31
From: earth
The VSS is digital.
It sends a pulse each time a tooth goes past the sensor and the ECM counts the pulses and works out how fast the bike is going.
So you cant drive your switch with this sensor directly.
One way to do it would be to buy or make a shift light. The shift light counts the spark pulses and turns on the light when the count exceeds the set point. you could use that circuit to count the VSS pulses and operate a relay to do whatever it is you are trying to do.
It sends a pulse each time a tooth goes past the sensor and the ECM counts the pulses and works out how fast the bike is going.
So you cant drive your switch with this sensor directly.
One way to do it would be to buy or make a shift light. The shift light counts the spark pulses and turns on the light when the count exceeds the set point. you could use that circuit to count the VSS pulses and operate a relay to do whatever it is you are trying to do.
Thread Starter
|
Outstanding HDF Member
Joined: Jan 2010
Posts: 2,916
Likes: 31
From: earth
Road Warrior
Joined: Dec 2008
Posts: 1,639
Likes: 2
From: Australia
Will this do the trick?
http://sailesmarketing.com/all-produ...-switch-relay/
http://sailesmarketing.com/all-produ...-switch-relay/
That will do the trick.
Road Captain
Joined: Sep 2010
Posts: 514
Likes: 17
From: SW Mississippi
Hey Jason, did you ever find out any more info on exactly what the PWM frequency values are, relative to speed? I'm researching that Speed switch/time delay relay we have been PM'ing each other about, and I have an idea, but I'm not sure what voltage/ pulse widths harley uses.
Banned
Joined: Apr 2012
Posts: 648
Likes: 9
From: WV
Hey Jason, did you ever find out any more info on exactly what the PWM frequency values are, relative to speed? I'm researching that Speed switch/time delay relay we have been PM'ing each other about, and I have an idea, but I'm not sure what voltage/ pulse widths harley uses.
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