When the duel volt/amp meters were first installed in the Fiero, I burnt up the DC-DC converters several times and the same with the meters. This time was no different, as I have ordered more DC-DC converters twice but have not had any issues with the meters. I have never been diagnosed but have all of the symptoms of dyslexia! I look at a schematic and then wire the components backwards sometimes, so have gotten in the habit of checking things two or three times before finally soldering or assembling a circuit. I was finally able to assemble the d-sub connector with the 12 volt power and get the meters to light up. A d-sub connector pin crimper was purchased and is working well. If all of the pins are connected to the wires first, then it is easier for me to make sure they are all inserted in the correct positions in the connector housing. The latest connector has just one wire going to the d-sub pin and the two wires were left long enough to be inserted in both of the MTA-100 connector assemblies.
NEW 12 V CONNECTON
NEW D-SUB CONNECTOR CONFIGURATION
Tomorrow the d-sub that I burnt up while trying to read voltage across the pins will be replaced and I am going to use the crimped pins to assemble it. This time, I am going to put electrical tape on each pin after it is crimped to the wire to make sure they do not touch each other. I still need to take voltage readings to make sure to insert the pins into the d-sub connector housing properly but will take proper precautions this time. I really hate having pack voltage coming into the interior of the car but it would need to use either a resister or a circuit to proportionally reduce the voltage going to the meters to avoid it.
Hopefully another post tomorrow,