Jump to content
SAU Community

Connecting Optima for stereo only

Topaz

By Topaz,
in Car Audio & Electrical

 Share

Recommended Posts

Topaz Grand Master

Topaz

Posted
Posted

I am gunna have 2 batteries, the one under the bonnet and one in the boot for stereo powa. The battery under the bonnet at the moment is a 360CCA, I think.

how do I hook up the second battery?

I am pretty sure it has to connect to the alternator so that it charges while the car is on (forgive me I am a n00b at this). So if assumption proves me well I can just connect it to the fron battery because that one is already connected to the alternator, right!...and ground the Optima to anywhere on the body, right!

............have I just created this thread for no reason?, I'll post to be sure.

is the above right?

Link to comment
https://www.sau.com.au/forums/topic/77866-connecting-optima-for-stereo-only/
Share on other sites
SERIES_II Enthusiast

SERIES_II

Posted
Posted

ahhhh u could do that or.....

get 4 gauge wire travel it from battery from front to back and put isolater solenoid about 30-40cm from batter from the same line. use 4 gauge wire from negative of rear battery to a solid point of the chasis in the boot somewhere

i think thats about it oh and use 2 fuses one at front battery and one on rear battery

Topaz Grand Master

Topaz

Posted
  • Author
Posted

thanks SERIES_II, thats what I think I am gunna end up doing anyway....

where do I thread a piece of cable from the front to the back running through the firewall?, I could see no points of access through it.....

are those isolator solenoids what stop the sudden backward surges of power?, had a mate tell me about those yesterday and that I needed one for my setup

CerealKiller Veteran

CerealKiller

Posted
Posted
ahhhh u could do that or.....

get 4 gauge wire travel it from battery from front to back and put isolater solenoid about 30-40cm from batter from the same line. use 4 gauge wire from negative of rear battery to a solid point of the chasis in the boot somewhere  

i think thats about it oh and use 2 fuses one at front battery and one on rear battery

only 4 gauge? Shouldn't you run 0 gauge wire?

Topaz Grand Master

Topaz

Posted
  • Author
Posted
only 4 gauge? Shouldn't you run 0 gauge wire?

thats a good point actually, I think I will get 2 Gauge for it as I am running 2 Gauge from my Optima to the amps and 2 Gauge ground....I always thought 0 Gauge was overkill

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      New kid on the block

      By GTSBoy · Posted

      The wiring diagram for the R33 RB25 is freely available, and is essentially the same same as most other RBs (just with differences as to which pin # does which job). To get the ECU to power up, you just need to provide power to the ECCS relay, and have the other power feeds that come in from the top left of the wiring diagram (wrt the ECU) that give perma power to the fuel pump relay, the ECU itself, etc etc, all connected. When you put power on all these it will just come to life. It's pretty clear from the diagram what needs to happen. Just follow the lines from the 12V + supply stuff in the top left over towards the ECU. I've even posted snips of such diagrams (not for vanilla 25, I think for Neo and 26) to various threads here in the last few months, talking about what it takes to get the fuel pump and FPCM up and going. Search these up and they will help get you started on doing the same with the vanilla 25 diagram. Hell, for all I know, I've done the same with that one in years past and have forgotten.
    • Duncan
      New kid on the block

      By Duncan · Posted

      Yep...so unless someone posts up the answer you will need to probe from the ECU connector to the dash plug with a multi meter in continuity mode to trace the wires.  Note the ECU has multiple - and + (and across different key settings - Battery, IGN and Start) and most likely the power is fed from the connector(s) that is normally near the left hand headlight.
    • Songo
      New kid on the block

      By Songo · Posted

      Thanks Duncan, I am actually just trying to get the Rb turning and running with the RB25DET S2 original loom itself  I am just trying to get it going outside the body and not thinking about the S15 or trying to match anything to the S15 loom at all I am only trying to see if anyone has done this and what pin they found to be the ignition trigger and ECU+/- on the dash connector, that's about it. Thanks  
    • iain_ST44GA
      M35 VQ25DET starter motor

      By iain_ST44GA · Posted

      Hi Guys, Does anyone know any aftermarket part numbers for a starter motor to suit the VQ25DET? I can find lots of alternative part number for the VQ35DE, which I assume would fit, but there is a lot of conflicting information out there. Thanks..
    • Murray_Calavera
      R33 GTR running -9 with no tune

      By Murray_Calavera · Posted

      I don't understand how this hasn't boiled down to - Upgrade the turbo when you have everything required. ECU, injectors, fuel pump, turbo, etc. Do it all at once.  If you don't have everything required, just enjoy the car as it is and keep saving up your pennies. 
×
×
  • Create New...