this might help - I believe any of the relays you find will use the same numbering as shown .... the 5th pin would be unused in your application [87A - "normally closed"]

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature we find it attached to the rest of the world" John Muir
"When we tug a single thing on an old truck, we find it falls off" me
Some TF series details & TF heater pics & Rust-a-holics Unanimous parking lot