From what I recall on the older models, I assume you are referencing the in-line fuse. On ours and other models, I likewise recall that there was some discrepancy in the fuse ratings. Some came with 30 amp and some came with 40 amp. We were having a similar problem on our 3400 and replaced the 30 amp fuse with a 40 and never had a problem afterwards (other than a repeated blowing of the fuse when the rear stabilizers were left down and trying to raise the front!!
). Another fix was to replace the in-line fuse with a reset breaker. I very much doubt if Keystone will remedy anything since the two motor fix was done at your option, but it is worth a try.
Bingo
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Bingo and Cathy - Our adventures begin in the hills of WV. We are
blessed by our 2014 3850FL Big Sky (previous 2011 3750FL and 2007 3400RL) that we pull with a 2007 Chevy Silverado Classic DRW CC dually.