have had my 96 Blazer since 09 and never had any issues till recently I had 2 fuses blow basically at same time. My auxiliary which is mainly my aux power (on either side of cig lighter), horn, dome lights and rear hatch all went out same day. We replaced the fuses and everything started working again. 3 days later, my aux fuse blows again. Any ideas / suggestions? The only thing I have plugged in is a charger for my phone and there was no cord or anything plugged into it.

 

There must be a short to ground somewhere in the circuit that are on those fuses.

What is strange is that they are not blowing immediately.

My closest experience like that was I had a fuse blow that sent power to my gauge cluster and radio. After disconnecting one thing at a time, I discovered that it was the radio that caused the short.

I found two nickels in in it! I think they had been in there since at least I got the truck about ten years earlier. I suspect they somehow got knocked loose and caused the short.

I hope this might give you ideas.