Here's a breakdown of what to consider:
1. Check Compatibility:
* Battery Tray: The most crucial aspect. Does the existing tray have enough space for a side post battery? Top post batteries are typically smaller. If the tray isn't compatible, you'll need a new one, and potentially a custom fabrication job.
* Hold-Down: The clamp that secures the battery. Will it work with a side post battery? Again, modifications might be necessary.
* Cable Clamps: The terminals on your battery cables might need to be changed if the size or type is different from the original top post terminals.
2. If Compatible (Easiest Scenario):
If the tray and hold-down are compatible, it's a relatively simple swap:
* Disconnect the negative cable first. Always disconnect the negative terminal before the positive.
* Disconnect the positive cable.
* Remove the old battery.
* Install the new side post battery. Make sure it sits securely in the tray.
* Attach the hold-down clamp.
* Reconnect the positive cable.
* Reconnect the negative cable.
3. If Not Compatible (More Difficult Scenarios):
* New Battery Tray: You'll need to find a battery tray designed to fit your Cadillac and accommodate a side post battery. This might require searching online retailers specializing in auto parts or checking salvage yards.
* Custom Fabrication: If you can't find a suitable tray, you might have to fabricate one from metal or use materials like sturdy plastic. This requires metalworking skills or access to a welder.
* Modifying the Hold-Down: You might be able to adapt the existing hold-down or create a new one. This also involves some fabrication skills.
* New Cable Terminals: You'll likely need new battery terminals designed for side posts if the existing ones are for top posts.
In summary: Before you buy a side post battery, carefully examine your 1993 Cadillac's battery tray and hold-down. If they're compatible, installation is relatively easy. If not, it can become a complex project requiring fabrication skills or professional help. It might be more straightforward to just stick with a top post battery.
