Where does the block heater cord plug into engine of a 1997 Suzuki Sidekick Sport 18L?

The block heater cord on a 1997 Suzuki Sidekick Sport (1.8L) doesn't plug directly into the engine block itself. Instead, it plugs into a dedicated electrical receptacle that's usually located somewhere on the front of the engine compartment, often near the radiator or on the lower part of the firewall. It might be a more discreetly placed socket, possibly hidden behind plastic trim or shrouded by components.

You'll need to carefully inspect the front of the engine bay. Look for a weatherproof electrical plug that's the correct size and type for a block heater cord (it will likely be a heavy-duty, possibly even a different shape than a typical automotive connector). The cord might also run through some sort of grommet or hole in the firewall.

If you can't locate it visually, consult your owner's manual. It should show the location of the block heater cord receptacle. A shop manual could also be helpful.