Yep, but have an extra relay and fuses in hand. I just blew the relay last week and my aeroforce threw the temp alarm (set to 240). I shut it down and pulled into a parking lot. All fuses were fine, so swaped the relay and all was well. Have had the 20A fuse blow before as well.
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I have a relay in my glove box. But I have never had an electrical issue with my pumps. The blowing of the fuse bothers me a bit though. I think I have a 20 amp on there and it has never blown.