Without the manual, you'll have to do some detective work:
* Check the fuse box under the hood: This is the most common location for relays. Look for relays that are similar in size and shape and possibly labeled with something related to the top, power windows, or convertible functions. The relay itself might not be clearly labeled.
* Check the fuse box inside the car (if applicable): Some vehicles have additional fuse boxes inside the cabin.
* Follow the wiring: If you can locate the convertible top motor or switch, trace the wiring harness back. It should lead you to the relay. Be cautious when doing this; don't disconnect anything unless you know what you're doing.
* Use a wiring diagram: Even a partial wiring diagram from a parts store or online will be helpful. Search specifically for "1989 Chrysler LeBaron convertible top wiring diagram."
Keep in mind that some components might have been replaced or modified over the years, so the location might not be exactly as described in older manuals. If you're uncomfortable working with car electrical systems, it's best to seek professional help.
