Quote:
Originally Posted by lilrusty
why am i wrong?? the guy is saying that his speedo is not reading. his car has an sr20 swap which means the plug under glove compartment has to be wired up to read coolant, rpm, speed, etc. if it was never wired during the swap, then it'll never read. i also mentioned wiring from vss to lower harness. so why was i wrong??
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The "plug under glove compartment" is the white plug next to the ECU plug. This plug has:
- thermal transmitter (for coolant gauge) from engine to this plug to dash plug and to coolant gauge
- tach signal from ECU to dash plug and to tach
- converted VSS signal FROM the speedo to the ECU.
The 2 VSS wires go from the lower harness to the BODY harness, around the body and then to the speedo. The speedo displays the speed and converts this alternating current into a digital signal and sends that converted signal to the ECU.
The wire under the dash does nothing for the speedo, and actually does not need to be hooked up to the ECU.
We discuss this at least once a week. Open an FSM or learn by searching. Either way, stop talking smack and learn.