1 Wire Alternator
+ Reply to Thread
Page 1 of 4 1 2 3 4 LastLast
Results 1 to 14 of 48

Thread:
1 Wire Alternator

  1. #1
    Member dopeyest1's Avatar
    Join Date
    May 2009
    Location
    Idaho Falls, ID
    Posts
    65

    Default 1 Wire Alternator

    Can someone please draw me up a wiring diagram for a 1 wire alternator setup. Looking at how mine is wired and it just doesn't make sense. It's for an Olds 455 Thanks
    If it's petty, don't sweat it - If it's sweaty, don't pet it

  2. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  3. #2
    mo balls than $cents$ IMPATIENT 1's Avatar
    Join Date
    Dec 2007
    Location
    hugo,okla
    Posts
    11,733

    Default

    + on the battery ---------------------to the terminal on the back of the alt. easy peasy, 1 wire

    Dare to be different, if it turns out great you can claim you planned it that way.

    Jetboatperformance.com

  4. #3
    I'm baaaaack... hkunz's Avatar
    Join Date
    Mar 2008
    Location
    Lake Havasu
    Posts
    4,365

    Default

    What he said
    It is impossible to defeat an ignorant man in argument. -William G. McAdoo, lawyer and politician (1863-1941)

    07 Advantage X-Flight 600 SCi Bravo 1 XR
    04 Cheetah Scorpion 6.2 Bravo 1 - SOLD!
    96 Donzi 21' 454 Bravo 3 Medallion - gone!
    72 Tahiti 16' 468 Olds Berkeley jet - SOLD!
    11 RZR XP, 08 Polaris Scrambler, 06 Rhino, 06 Joyner 650 dune buggy, 04 KFX 700

  5. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  6. #4
    Member dopeyest1's Avatar
    Join Date
    May 2009
    Location
    Idaho Falls, ID
    Posts
    65

    Default

    Thanks - that's what I thought - I wonder where the 2 wires hooked up to it go LOL logs coming off tomorrow and OT's going on so the semi-wad of wiring will be easy to get to and redo. Thanks
    If it's petty, don't sweat it - If it's sweaty, don't pet it

  7. #5
    Member dopeyest1's Avatar
    Join Date
    May 2009
    Location
    Idaho Falls, ID
    Posts
    65

    Default

    OK here's what I think I have determined from this mess. Well, I guess it isn't a "real" bad mess - hard part is I am sure I'm working with the 1975 wiring and some of it is faded enough that it's hard to tell blue from black, yellow from white, etc.
    ANYWAYS - the diagram that came with my new alternator shows the wire already discussed (post to pos. terminal) Then there are 2 side terminal wires and directions state:
    Terminal 1 must receive voltage. This voltage is provided by the indicator lamp on most "vehicles". However vehicles that have gauges will use a resistor in place of the indicator lamp. (there is an exsisting wire that runs from the amp gauge in the dash to very close to alternator so I am persuming that is wire #1
    Terminal 2 must have battery voltage. This voltage is supplied directly from the battery and will be present whether ignition switch is in the "ON" or "OFF" position. (there is a wire that runs from the post on back of ignition switch labeled "Batt" and it runs fairly close to alternator also.
    I'm thinking and hoping that these are the correct 2 wires. There is a heavy wire (10 guage) that was one of the wires hooked to the old dinasaur alternator that lookes like it came off one off the starter posts. (hard to see - still have logs on - don't want to pull them yet in case UPS doesn't show tomorrow on there scheduled delivery day - party time weekend!!)
    Well if this sounds right or wrong I am sure someone is a wiring wiz on the boards and I hope they can point me in right direction.
    Last edited by dopeyest1; 07-02-2009 at 04:21 PM.
    If it's petty, don't sweat it - If it's sweaty, don't pet it

  8. #6
    Senior Member Oldsquirt's Avatar
    Join Date
    Dec 2007
    Location
    NorCal
    Posts
    979

    Default

    You are making this more difficult than it needs to be.

    1.)Disconnect battery

    2.)Remove old alternator and install new one.

    3.)Connect output wire(the larger of the three) to the output post of new alternator.

    4.)Remove the other two wires. They are no longer used. This is real simple if you have a terminal block on the engine. If no terminal block, insulate the wire ends and fold wires back into harness(unless you WANT to follow them all the way back to source).

    5.) Reconnect battery

    Since you have an amp gauge, the output of the alt goes all the way to the gauge and then back to the engine and then back to the battery. With a voltmeter, it would not run to dash but would take a more direct path to battery.
    Last edited by Oldsquirt; 07-02-2009 at 04:52 PM.

  9. #7
    Member dopeyest1's Avatar
    Join Date
    May 2009
    Location
    Idaho Falls, ID
    Posts
    65

    Default

    So you're saying that signal will already be route to guage then and just ignore these other to post? hmmm Let me finish what directions said about each terminal if it isn't hooked up (did a little abbreviating on last post):

    For terminal #1: "Failure to have voltage at terminal #1 may cuase:
    No charge, Indicator lamp off.
    Charges OK, but indicator lamp is on.
    Will not charge unless engine is "revved" up. Indicator lamp may come on when unit begins charging.

    For terminal #2: Failure to have voltage at this terminal will cause:
    No charge, Indicator lamp off.

    Sorry if I sound a bit nervous - had battery die on the lake the other day and took 1 1/2 hours to get a jump. Hopefully I am overkilling here - just want to do it right the 1st time
    If it's petty, don't sweat it - If it's sweaty, don't pet it

  10. #8
    Senior Member Oldsquirt's Avatar
    Join Date
    Dec 2007
    Location
    NorCal
    Posts
    979

    Default

    Are those directions from the NEW alternator? Is it truly a one-wire unit? What brand and model?

    And how about some pics of the old and new units.

  11. #9
    Member dopeyest1's Avatar
    Join Date
    May 2009
    Location
    Idaho Falls, ID
    Posts
    65

    Default

    The new one is a Delco Remy #20038 The old one is an old Motorola Transpro 5-197 Give me a sec and i'll snap a couple quick pics (have to figure out new digital camera - the little woman dropped my old one a couple weeks ago and it is now taking pictures of the bottom of Palasades Resevior.
    If it's petty, don't sweat it - If it's sweaty, don't pet it

  12. #10
    Senior Member Oldsquirt's Avatar
    Join Date
    Dec 2007
    Location
    NorCal
    Posts
    979

    Default

    Quote Originally Posted by dopeyest1 View Post
    The new one is a Delco Remy #20038
    Hook it up as I said above. Test its operation. You --may-- need to blip the throttle to start it charging.

  13. #11
    Member dopeyest1's Avatar
    Join Date
    May 2009
    Location
    Idaho Falls, ID
    Posts
    65

    Default

    1st 2 are the old Motorola
    Click image for larger version. 

Name:	Motorola 1.jpg 
Views:	427 
Size:	65.0 KB 
ID:	46592
    Click image for larger version. 

Name:	Motorola 2.jpg 
Views:	214 
Size:	59.9 KB 
ID:	46593

    this is the only decent one of the Delco - hard to get mounted in boat but tried to show the other plug I have been referring too.
    Click image for larger version. 

Name:	Delco 3.jpg 
Views:	193 
Size:	38.0 KB 
ID:	46594

    Hope these work 1st time posting pics here...
    If it's petty, don't sweat it - If it's sweaty, don't pet it

  14. #12
    1 boat's never enough Bigtorq's Avatar
    Join Date
    Aug 2008
    Location
    The OC
    Posts
    107

    Default

    Hook it up the way old squirt described and you'll be fine. Terminal 1 is for an idiot light to tell you when it's not charging (you have a guage for that). Terminal 2 is used for sampling voltage at a terminal strip on a car so that the alternator will charge the battery and make sure you maintain about 14V at the terminal. For a boat you don't need to worry about this because of the short distances and lack of nav systems, dvd, head lights etc . . . Just hook it up and put a voltage meter across your battery terminals when it's running. Verify >14V and you're good to go. Good luck!

  15. #13
    Junior Member
    Join Date
    Nov 2009
    Posts
    4

    Default sanger flat

    looking for deck mount tach for castle v drive also bassetts or glenwood water log for a 440 ot only
    Last edited by Mark Walker; 12-01-2009 at 04:18 PM.

  16. #14
    What the Hell is That? 72Hondo's Avatar
    Join Date
    Apr 2008
    Location
    Denton, TX
    Posts
    1,633

    Default

    Quote Originally Posted by Mark Walker View Post
    looking for deck mount tach for castle v drive also bassetts or glenwood water log

    Really?
    Quote Originally Posted by Kyle View Post
    Log off and go float, hang in the party coves, Show and shine on the trailer, fill up the boat, wax it, v-drive, jet, outdrive, and if you got a canoe and your reading this, you sir, need to phucking upgrade.

+ Reply to Thread
Page 1 of 4 1 2 3 4 LastLast

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Please select your insurance company (Optional)

Log-in


Tags for this Thread

Digg This Thread

Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •  
 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95