Jump to content
SAU Community

Recommended Posts

hey all, i have installed an rb25/30 into a hg holden and have conflicting information on which wires on the alternator are wat, i have two thin wires from the brown plug on the alt itself, now from wat i've been researching there are a few different plugs and wires coming from/too the alt itself as some people claim they have a fat and thin wire, but usually one is constant with wat people are saying which is the red/white wire (thin).

i am lead to believe that the white wire with red trace( or vice versa) is a charge indicator lamp wire and the light green (also thin) is 12v positive, now where i am confused is that do i wire the green wire straight onto the battery itself as in can i loop it round and wire it to the positive on the alt itself? or does it have to be a 12v ignition source (key on will provide the power),

any info at all will be muchly appreciated , just want to know which way is the best way to go about it

cheers dave

Can't help with colours but the excitation wire should be ignition fed or it will drain the battery when the key is off.

I have seen numerous topics where it's been shown which is which but can't remember so have a search til someone responds.

cheers mate , i have searched for hours for the same coloured wires but they usually different colours and have a fat and thin wire, you say the excite wire needs to be switched whereas other threads suggest to constant battery power, this is what i'm trying to sort but it does make sense to switch it

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


  • Similar Content

  • Latest Posts

    • Ahhh, that, yeah, but it all worked out well in the end As for the ITB noises, I don't really wind it out with her in the car, and the dort only really starts dorting hard when your WOT or up it hard
    • It wasn't about the dollars. I mean how she didn't like the loud exhaust and you had to change it again 馃槢
    • I'll tell her I put in a new air filter on it, which, it would have anyway with the ITB's In the end she isn't to fussed, she spends lots of money on hair, nails, make-up and all the other "required" beauty products that women use, plus I grease the wheels with shiny gifts and holidays wherever and whenever I can She once questioned my car spending "budget", but after itemising everything she spends on herself, and what I spend on her, and the fact that I don't care if she does or doesn't wear make-up and fancy pants perfume, or requires new outfits for every wedding, funeral or anything else she deems worthy, and I'm quite happy to go "real" camping, instead of staying in hotels or jaunts on cruise ships, she decided not to press the subject on how I spend funds, and has never asked "how much did that cost" again, so a win to me And how often can you say you really get a win with the fairer sex? She is a good woman, and in the big picture, I'm really lucky.....that she hasn't killed me yet
    • What will you do when the Minister of War and Finance says the intake noises are too loud?
    • Will the clear coat dissolve the ink tho?? I thought about clear vinyl tape too. Thinking what to do haha. The one I have now is cracked in 1 spot, otherwise mint. Plus the MINES one is much thicker plastic material so its not flimsy at all.
  • Create New...