Alloy07GT08

Started hooking everything up last night to run my 2 yellow tops...

Followed the directions from cole hersee for the isolator...pretty straight forward. Remove alt cable from battery 1, put on alt bolt of isolator...i ran 4g cable from the bat 1 post on the iso back to battery one and secured it where the alt able was...then ran 0g from bat 2 post on the iso to the trunk optima...grounded bat 2

When I made all the connections and started her up...Battery 2 was not getting any current. The alt cable was showing .1 V and battery 1 was showing normal.I am guessing there is an issue with all the stock wires left on the bat1 + post???I seemed like the car was just running off the battery...my voltmeter just kept dropping, charging system light came on ect...

I shut her off and puteverything back tostock for bat 1 and shes runningfine.I have never used a battery isolator before, but everyone says the 3 post's (bat1, alt, bat2) are simple...WHAT AM I MISSING?!? lol trying to have this done this weekend :-/

Thanks in advance guys

hammeron

have you tried leaving battery #2 off
of the isolator, to see how the
system runs

Alloy07GT08

I didnt :-/ I got everything hooked up right as the sun went down and when the car seemed like it was just running the main battery down, with no power to the back I thought something has been hooked up wrong and changed it back...

Since I got 13voff the batt oneiso post and nothing off the alternator post I figured that it was just showing what was coming off the battery...Should Inot have ran a 4g wire from the bat 1 postback to the battery?

I think everything washooked up fine except the postive battery terminal on battery 1 was tripping me up...As I said all I did was take the alternatorcable off and put it on the ISO then made a 4g wire with two ring terminals and went from ISO batt one back thethe postive terminal on battery 1 where the alt cable had been...I left the other wires that were on the + terminal alone...one running to the fuse box and I am guessing the other one went to the starter?

Alloy07GT08

Looking around....should I have taken everything off the + batt 1 terminal and put it on the alternator bolt on the ISO? Then just ran a wire from batt 1 iso post back to the battery?

Sorry just spinning my wheels on something I've never done before lol

hammeron

well i was just about to write my disclaimer

don't do this!


ok having said that.....

yes, that's exactly what i would do....i believe the
problem is with the voltage sensing circuit of the
alternator.....it's on the wrong side of the diode
in your present config.....

Alloy07GT08

Alright so I rigged another piece of 4g wire as a test before I hacked off the end of the stockpositive terminal...Took it off the main battery screwed down this new piece of wire and attached the other endto the alt iso post. Then hooked up the other 4g wire from thebat 1 iso post to the postive on the battery....Nothing....no power to the car even...went to start her up and realized I couldnt even open the door lol [&:]

So...Moving on...Inthat stock bundle of + terminal wires I have the separate alt cable...then two others taped together, one to the fuse box and one to the underside of the car...

Do you or anyone elseknow the right combo of wires to put to the alt post and batt 1 post on the iso? I am getting so fed up with it lol [:@]

hammeron

i'll see if i can map this
out

Alloy07GT08

Thanks for your continued efforts, I will check back periodically...Gotta spend some time with the GF lol...Shes gets a little upset when I spend more of my weekend with the car than her.

Thanks again.

hammeron

well i think we got it.

i think your original configuration was perfect
except for the voltage sensing wire (yellow).

here's the install instructions....
http://www.colehersee.com/pdf/IFs/IF-128_Bat%20iso.pdf

we need that adapter that sits near the alternator
connector! the yellow wire lead would then go
to either iso #1 or the + side of bat 1.

Burnsy

hammy can be very helpful when he feels like it [8D]