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MartinsMotorSport
MartinsMotorSport, BMW Technician
Category: BMW
Satisfied Customers: 87
Experience:  BMW Group Certified Technician, quilified top in class, 8 years exp, Motor Mechanic Trade Quilified
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325i: I have a 1995 BMW 325i. Want to hook up an external digital

Customer Question

I have a 1995 BMW 325i. Want to hook up an external digital tachometer and speedometer. What is easiest way/ Where is the Vehicle Speed Sensor wire?
Submitted: 2 years ago.
Category: BMW
Expert:  MartinsMotorSport replied 2 years ago.
Hi ill try help you. Please give me your vin number?
Customer: replied 2 years ago.
This is the 2nd time you people have asked for this. Plus this answer is coming over 24 hrs. after my request-
WBABJ6329SJD41545
Customer: replied 2 years ago.
Sunday, 5.3.15, 10:48AM----WHERE IS YOUR RESPONSE????
Expert:  MartinsMotorSport replied 2 years ago.
It was Sunday, I don't work on Sunday.Its a black wire Pin 20 on the cluster.Here is the pic
Expert:  MartinsMotorSport replied 2 years ago.
:)
Customer: replied 2 years ago.
See that is for the tach. Where is wire for speedometer?
Expert:  MartinsMotorSport replied 2 years ago.
That is the speed wire, are you looking for revs?
Customer: replied 2 years ago.
Yes. Looking for both MPH and RPM.
Expert:  MartinsMotorSport replied 2 years ago.
OkPin 2 is your speed signal SW/WS
Customer: replied 2 years ago.
Please clarify "SW/WS. How is one wire showing both RPM's with shifting gears and steady MPH?
Expert:  MartinsMotorSport replied 2 years ago.
HiThe sw/ws is black wire with white trace pin 2 on the cluster, that is the MPH signalThe sw black wire pin 20 on the cluster is the RPM signal. There is the 2 wires.
Customer: replied 2 years ago.
Sent you image of back of instrument panel. Please send image noting WHICH cluster of wires you are referring to.
Wire #2 is noted as turn signal.
Expert:  MartinsMotorSport replied 2 years ago.
Cluster is another name for the instrument panel.
Pin 2 is on the x17 connector.(back of panel)
Pin 20 is on the x16 connector.(back of panel)
both connectors is on the back of the instrument panel.
so if you look at the plugs and pull the cover off the plug, you will see on pin 20 a black wire, then that is x16 connector and you can tap into that wire
and if you look at the other connector you should find in pin 2 a black wire with white stripe, that is the other wire you can tap into.
Let me know if you come right :)
Customer: replied 2 years ago.
Please send picture of back of panel with location of wires. See attached image.
Expert:  MartinsMotorSport replied 2 years ago.
Ok give me time to strip off a car.
Customer: replied 2 years ago.
What's the update?
C. Janney