Hi, well I would suggest trying to match it with existing part number if possible....safest and less need to change wiring if required to accommodate a different replacement part. In a short term pinch/emergency you could probably use a high amp Ford starter relay. It boils down to current/voltage rating of the contacts and how long the relay stays energized (could overheat if it is intended for short duration use like a starter relay). These are not latching relays.
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