If your 1993 Nissan 240SX has issues with the speedometer or digital display, it could be due to a faulty speed sensor, a malfunctioning instrument cluster, or wiring issues. Start by checking the speed sensor located on the transmission, as a failure here can prevent the speedometer from functioning. Inspect the wiring harness for any loose connections or damage, and consider testing the instrument cluster for faults. If these components appear to be in good condition, it may be necessary to replace the entire cluster.
The instrument cluster ground needs repaired.The instrument cluster ground needs repaired.
The fuse is mounted in the fuse box in the right hand side of the engine bay. you will have to unclip the lid of the fuse box and the instrument cluster fuse is no.3
check the instrument cluster connection in back .. i got one and they would work sometimes then shut off .. i hit the dash cluster and they came on .. hense a bad connection at back plug on instrument cluster .. it runs through the plug at back of instrument cluster. sometimes the connection gets dirty doesnt make good contact. clean them up . fix is to take the instrument cluster out and clean up the connections in back.
When you bought it did they tell you it would have to be programmed by the dealership?
To remove the instrument cluster on a 1993 Traffic T1100, start by disconnecting the vehicle's battery to ensure safety. Next, carefully remove any trim or panels surrounding the cluster, which may require unscrewing or unclipping. Once exposed, detach the cluster by unscrewing any mounting bolts and gently pulling it out, being cautious of any connected wiring. Finally, disconnect the wiring harness from the back of the cluster to complete the removal.
It is not difficult. First you have to remove the 12vot cigarette lighter plastic and then remove the radio. 4 screws for the radio. Then you have to remove the panel that goes from the radio up to the instrument cluster. This panel has 4 screws. 2 of them are on top of the instrument cluster (visible) and the other two should be visible after removal of radio.
The PCM is located behind the instrument cluster above the pedals on the drivers side.
The dealer has to program it.
Generally the speedometer cable starts at the transmission and ends at the instrument cluster. Visually inspect from the firewall in the area of the instrument cluster and track back to the transmission. You should be able to find it with no problems. --mark
You can find some of the wiring diagram at, commandocaralarms.com
To fix a dim instrument cluster and non-functioning indicators on a 1993 Lexus SC 400, start by checking the fuse related to the dashboard lights, as a blown fuse could be the culprit. If the fuse is intact, inspect the dimmer switch for proper operation, as it may be malfunctioning. Additionally, consider replacing the bulbs behind the instrument cluster if they are burnt out. If these steps do not resolve the issue, it may be necessary to examine the wiring or the cluster itself for further electrical problems.