wierd issue

[chrisw91 10+ year member]

i installed a amp a couple months ago to run my front speakers(rf 250a2) . and recently had to use my heater. when i turned the fan speed all the way up on the heater, the amp for the fronts fades off then comes back on, and off and on at random times. i was able to use my heater on the 3rd speed level without this happening. what is going on here?

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[WrenchGuy 10+ year member]

How old is your battery?

 

[WrenchGuy 10+ year member]

Nevermind. I asked before I looked at your sig.

????

 

[chrisw91 10+ year member]

battery is about a year old. and it is a good interstate. it is perfectly fine.