Speed sensor won't work..

[slideways21]

So i got a new speed sensor cause my previous one was all grinded, soo i put the new one today which is in good condition compared to my old one and it doesn't work! could it be my wiring? can someone give me some info on this? thakn you

[Stripes]

Car, motor? My speed sensor didn't work even though I had it wired correctly through the plugs, so I ended up hard wiring it directly from the gauge to the speed sensor.

[Beanstalk]

So i got a new speed sensor cause my previous one was all grinded, soo i put the new one today which is in good condition compared to my old one and it doesn't work! could it be my wiring? can someone give me some info on this? thakn you

S13 ?S14?.... auto to man?? tell us a lil more does the needle read anything?

[slideways21]

it's a s13 coupe with a s13 blacktop, the car was and auto to manual swap before. How would i hard wire the speed sensor to the gauge? i'm not very good at that stuff to be honest.. thanks for the quick response too

[Tulsa_S-13]

I had the same problem when I swapped in my S13 blacktop into my auto to manual conversion.

The lower harness for the auto is different than the manual lower harness. The manual uses a different plug where the body harness connects to the lower harness.

What I ended up doing was using my auto harness. You'll need to extend the ground wire going to the starter. I'll post some pics here in a second.