Don't know about return policy. You'll have to call. If it's the wrong part, they should replace it. They sell that item here for about $27.00. It sounds like it's the wrong part, but.. try and connect it, may be just a different aftermarket mfg.

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Jeff Lawrence
1989 300e
2000 Dodge Grand Caravan SE
No matter what you fix, there will always be something else to fix..
"Warranty" is just another way of postponing the inevitable.