I just got it in the mail today and I want to intall in my 07 Suburban. Anyone here who has this install on they're tahoe/suburban, where did you mout these unit at? Did you mout it on the firewall, or did you mout it near the fuse box? Is there an easy accessory wire available under the hood that I could use to turn the isolator on/off? Also is there anything else I have to do special with this isolator since this is a newer truck? From the directions it looks like I'll go from the alterntor to the one of the isolator's hot lead. Then from the 2nd isolator hot lead to a fuse/relay switch, which will then go to the second battery. Does that sound about right? Then there are two smaller leads on the isolator, one for ground and the other for the accessory wire to know when to turn the relay on/off.

Yeah I'm confussed just typing this, so if anyone out there can lend a helping hand....or reply I would be forever in your debt.

is it an isolator or solenoid?

I know solenoids come in 200A but i've only seen 240A isolators go up that high in rating.

Its a Pacific Accessory Corporations PAC-200 Mobile Audio Relay and battery Isolator http://www.pac-audio.com/instructions/PAC-200.pdf

This relay isolator is designed to prevent voltage drop on the second battery.

Edited July 18, 200817 yr by pervitizm

i installed mine in the back with my batteries.

They said i could as long as i had a fuse up front near the battery.

You have 2 big terminals and 2 small terminals.

The cool thing about this is it doesnt matter which one you use for in\out or ignition\ground!

So, this is what you do-

Run main power line from front battery to BIG terminal. You then run another power ling, same AWG, from other BIG terminal to another fuse block then to all your batteries.

This now leaves 2 small terminals left-

Choose either one to be ignition turn on. Run your ignition turn on wire to one of the small terminals.

This now leaves just one small terminal left. This is going to be your ground. Just run a ground wire from it to ground.

The small terminals are small because they do not require very large wire. I used 10 awg for ignition and 12awg for ground. I'm sure that may be overkill but better safe than sorry.

i installed mine in the back with my batteries.

They said i could as long as i had a fuse up front near the battery.

You have 2 big terminals and 2 small terminals.

The cool thing about this is it doesnt matter which one you use for in\out or ignition\ground!

So, this is what you do-

Run main power line from front battery to BIG terminal. You then run another power ling, same AWG, from other BIG terminal to another fuse block then to all your batteries.

This now leaves 2 small terminals left-

Choose either one to be ignition turn on. Run your ignition turn on wire to one of the small terminals.

This now leaves just one small terminal left. This is going to be your ground. Just run a ground wire from it to ground.

The small terminals are small because they do not require very large wire. I used 10 awg for ignition and 12awg for ground. I'm sure that may be overkill but better safe than sorry.

Thanks for your help. I was confussed with the photo from the instructions. Cause it looks like I can go from the alt to the relay instead of the primary battery to the relay.