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<blockquote data-quote="AllPro" data-source="post: 6205664" data-attributes="member: 613344">I have a &#039;99 Tahoe that has 4 Optima Yellowtops in it (1 in the front, 3 in the back). Had the truck for 2yrs and never has an issue until recently. The 3 batteries in the back went dead. Took them to Autozone, tested them, and they were bunk. Ended up buying 3 more off of CL, that were brand new in the original wrapping, with 2008 date codes.I noticed that within the past week my voltage went from a steady 15 volts, to slowly dropping to 0. Everything in the truck works, minus the stereo now. The only charging issue I have had was with the isolators. They were replaced 1yr ago. Any ideas as to what I should look for or the possible cause for this??Thanks in advance to all that reply.BTW, here is a brief rundown of what the system is:6 15 RF Power HX23 RF Power 1500.12 RF 400.4Focal mids/highsPioneer headunitEpicenter</blockquote>

[QUOTE="AllPro, post: 6205664, member: 613344"] I have a '99 Tahoe that has 4 Optima Yellowtops in it (1 in the front, 3 in the back). Had the truck for 2yrs and never has an issue until recently. The 3 batteries in the back went dead. Took them to Autozone, tested them, and they were bunk. Ended up buying 3 more off of CL, that were brand new in the original wrapping, with 2008 date codes. I noticed that within the past week my voltage went from a steady 15 volts, to slowly dropping to 0. Everything in the truck works, minus the stereo now. The only charging issue I have had was with the isolators. They were replaced 1yr ago. Any ideas as to what I should look for or the possible cause for this?? Thanks in advance to all that reply. BTW, here is a brief rundown of what the system is: 6 15 RF Power HX2 3 RF Power 1500.1 2 RF 400.4 Focal mids/highs Pioneer headunit Epicenter [/QUOTE]

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