I just installed one of these 6 weeks ago:up:not sure if your 04' has the key in the coil cover or not.
If it does, you can replace the key with a switch from Tractor Supply store.
The issue is that the barrel of the switch has to be skinny enough and long enough to fit the coil cover, not many will work in the stock coil cover, but the one from tractor supply (or ebay) that fits an old ford tractor will bolt right in.
Tisco Switch Assembly, 8N3679C - Tractor Supply Co.
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