Google obd2a ecu pinout and obd1 pinout.
obd1 uses only 1 o2 sensor. The jumper will plug and play if you have other than an hx. Because the hx has the 5wire primary, the ecu jumper goes directly to D7 primary o2 sensor. You going to have to put it back to D14 and use the secondary o2, instead of the primary.
obd1 uses only 1 o2 sensor. The jumper will plug and play if you have other than an hx. Because the hx has the 5wire primary, the ecu jumper goes directly to D7 primary o2 sensor. You going to have to put it back to D14 and use the secondary o2, instead of the primary.