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  1. sam am I

    Regulator/Rectifier Installation

    Very cool, you're quite welcome and ty for the follow up......
  2. sam am I

    Regulator/Rectifier Installation

    Not sure, I don't have/can't find enough info on your year/model, BUT I see where gray and yellow are used when only two wires are present from the "charge coil". When he says "lightning coil", I wonder if this is a stator coil dedicated for the switch box power supply perhaps, but usually...
  3. sam am I

    Regulator/Rectifier Installation

    Yes, that is the "-" terminal of the rectifier if you will that ultimately goes to the batt's neg post/ground. As long as the bare metal bracket it came with you've mounted it too then mounts(ties) somehow to ground, sure, but it's not necessary if ya somehow can't make it fit, it looks sorta...
  4. sam am I

    Regulator/Rectifier Installation

    The white and yellow wires connect (any order) to the rectifier "~" AC terminals, the "-" neg terminal of the rectifier terminal goes to battery negative post or ground, and the "+" positive terminal of the rectifier goes to the battery positive post (usually battery side of starter solenoid)...
  5. sam am I

    No start after rewiring alternator 4.3 Mercruiser

    Nope.........a VSR/ACR is nothing more then a automatic battery switch cept worse IMO. With a battery switch at least you aren't always forced to parallel/"both" your dis-charged house battery with your topped off start battery to re-charge it. With a switch and only a 40A alt, I just had to...
  6. sam am I

    No start after rewiring alternator 4.3 Mercruiser

    Well heck NO!! That is just too simple man and there's NO app!!!..............J/K!! Sure ya can and that's all we had in the "great before" and we're all still here safe and mostly sane, just remember to do some mindful switching from time to time, no biggie.
  7. sam am I

    No start after rewiring alternator 4.3 Mercruiser

    So no, there is still that pesky forward votlage (Vf) **drop HOWEVER there's a work around, yes!!! When using his/the alt's "sense" wire connected to the iso's *built-in "compensation" terminal, the alt NOW will automatically step up it output voltage to make up (compensate) for the/any Vf...
  8. sam am I

    No start after rewiring alternator 4.3 Mercruiser

    Few ways.......But in your case since you have an regular alternator (rotor type) that sounds like is being wired with remote sense AND if it were me with that set up, I'd most definitely use a schottky diode type that has remote("compensation") sense...
  9. sam am I

    No start after rewiring alternator 4.3 Mercruiser

    Either way, when you parallel (ACR comes on/batt switch in "both") a dis-charged battery (house for example) with a charged battery (start for example) the batteries have to "equalize"...... Which means? The second a charged battery is electrically connected to the discharged battery's (alt...
  10. sam am I

    Wiring help/Electronic gauge

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  11. sam am I

    Wiring help/Electronic gauge

    The tach's sig SHOULD be taken from the neg side of the coil as that is the side that is switching and creates the sig. Recall the points (mech or electronic) open and close the neg side of the coil to ground while the pos side is tied to 12V. Each time the points open (after being closed), the...
  12. sam am I

    Wiring help/Electronic gauge

    The front end of the tach could be being over driven, but I also think your tach is just picking up the varying freq's from the "ringing" that occurs when the coil is switching off and on, its sample rate is such that it's displaying various area's of the ringing. I think they're real just not...
  13. sam am I

    Ballast resistor? why

    So during starting/cranking on these/some older designs, when the starter's solenoid engages, simultaneously and automatically within the proper type solenoid, an internal connection is made that bypasses the ballast resistor, this "starting connection" sends straight 12V to the coil's +...
  14. sam am I

    Just 3 Words

    I'm an Idiot!!
  15. sam am I

    Charging Issue - three battery system

    I suppose it's possible.........Wondering however since in normal switch line-up (Port =1, Star = 2), then as wired and for simplicity, switches are lined up with their designation to the actual the batts ....(see below). Think this is how your wired, Batt 2 is being charged with port alt when...
  16. sam am I

    Charging Issue - three battery system

    When Battery 2 (engine 2) switch is set to 1&2, what is Battery 1 (engine 1) switch is set to? Going to assume then engine 1 it is also set to 1&2?, therefor the alt on engine 1 is able to ALSO charge engine 2's batt as each engine can share the house (typically, see below) ............Check...
  17. sam am I

    2016 Yamaha F4 Rectifier Wiring

    http://www.who-sells-it.com/cy/yamaha-motor-usa-5578/rigging-parts-2013-33075/page-54.html Last night I found myself near the end of the internet and found this, Page 2-12 has part #'s and such, might come in handy if ya haven't seen such yet...................ALSO, looks like (see page 2-11)...
  18. sam am I

    2016 Yamaha F4 Rectifier Wiring

    If you're not in a hurry...........SLOOOOW boat from China, but is most likely what is being sold in the US at a 400% markup........... https://www.aliexpress.com/item/32899377649.html
  19. sam am I

    Low voltage to accessories from ignition switch

    Could be the contacts in the switch worn and corroded and/or with the given amount of current through those contacts, voltage drop can increase.........I'm so cheap, I've taken many apart of the years and either re-surfaced them, flip them over if possible or purchased replacement contacts. They...
  20. sam am I

    2016 Yamaha F4 Rectifier Wiring

    Dang.......Was hoping it was already under there for ya, BUT yes there has to be the that coil assembly (enameled copper coiled usually on laminated iron, sorta horseshoe looking things) that mounts right next to/under the flywheel.......... I'd assume these lower amp guys would look similar to...
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