I know that the electrical connector for the fuel sending unit is underneath the rear storage compartment (rear seat) area. I'm not sure if you can access the sending unit from there though.
Helm's seems to disagree. Under "Sending Unit Test/Replacement" on page 23-96:ollie said:That access panel only allows a visual to the fuel connections.
And then has a little picture showing the usage of "FUEL SENDER WRENCH 07920-SB20000" on the sender unit.'91 CRX Service Manual said:1. Remove the security compartment (see section 20), then remove the maintenance access cover.
2. Check that the ignition switch [is] OFF, then disconnect the 2-P connector from the fuel gauge sending unit.
3. Remove the fuel gauge sending unit.