Locking connectors how to unlock them?     

Most, if not all, connectors are locked.
Never pull connectors, with out  operating the locking lever.  The most common, look like this.  ECT, IAT, TPS,  ISC ?
Suzuki don't sell them, so keep that in mind. before forcing any connector.

Some work backwards, like the Oxygen sensor. Lift up on the lever and pull the connector.

rev 1   ++++ 4-21-11