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  1. 04fxdwgi25

    Popped through the intake.

    How old is the fuel? Has the fuel / water separator been changed? Take a fuel sample and see if there is any water in it.
  2. 04fxdwgi25

    Bravo shifter / throttle install on a gen 2???

    What boat / engine ( I see it's an Alpha gen 2 ) we talking about here. A little clarity will go a long way. Pictures of what you have vs what you want help too. We are basically guessing here. Are you talking about cables when you say replacing a "alpha style" with a "bravo style"? 99.9%...
  3. 04fxdwgi25

    Thunderbolt IV 4'' box module wiring

    Since you provided very little to no info on what you actually have, here is the general Thunderbolt 4 wiring, as requested. This is an Alpha. Bravo is same without the cut out switch. I would ground to a bolt on the intake or block, eliminating at least 3 possible joints / points of failure...
  4. 04fxdwgi25

    Dust Cap Woes

    Let's go about this in logical steps. I am curious, as I have never had a cap fly off a hub on any vehicle or trailer. Can you take a measurement of the ID of the hub, where cap sits, with a caliper and post what it is. Then post what the OD of the cap is. Either the hub is out of spec, or the...
  5. 04fxdwgi25

    Bravo shifter / throttle install on a gen 2???

    I see what is going on. You would need a dual control station one handle for shift and one for throttle. It's not a Bravo vs Alpha thing, as the 2 are the same, controller wise. It's the design and method of control at the engine that changes.
  6. 04fxdwgi25

    Bravo shifter / throttle install on a gen 2???

    Delete
  7. 04fxdwgi25

    Dust Cap Woes

    You can use permatex hardening gasket sealer on them. After it dries, they will stay put.
  8. 04fxdwgi25

    Antiseize on sparkplug threads

    Have always used a dab of antiseize on spark plugs, especially on aluminum heads. Just be careful with aluminum heads and the type you use. Use very sparingly.
  9. 04fxdwgi25

    Where’s the gas gauge sending unit ?

    Fuel gauge sender will be near where the hoses attach to the fuel tank. Follow the hoses to tank and you'll find the sender.
  10. 04fxdwgi25

    Will gauge lighting work off SPDT switch?

    Yes, gauge lighting will work off any kind of switch, unless there is some exotic lighting system / control . Sperate circuits are best. PS: lots of boat manufacturers don't use a switch for gauge lighting. They just run it off ignition switch.
  11. 04fxdwgi25

    Can't shift after bellows/lower shift cable change with Bravo 3.

    OK, getting confusing....Installation and removal should be done with shifter neutral. Exerpts from the Bravo manual..... Removal 1. Shift remote control into neutral. 2. Place the drive unit to the full UP/OUT position. 6. Ensure the shift cable linkage jaws open and release the shift cable...
  12. 04fxdwgi25

    Tach issues

    I would suggest smacking it with a hammer as the last resort.
  13. 04fxdwgi25

    98 mercruiser 5.7 unhook wire with male disconnect terminal. Just notice it unhook normal?

    I'd be more concerned with the collapsed / crimped hose beneath it.
  14. 04fxdwgi25

    Tach issues

    On the back of the tach is a hole with the adjustment in it for setting the number of cylinders of the engine. Move that adjustment from right stop to left stop a few times. Then set it back to proper setting of "8". It is a switch in there that gets corrosion on the contacts after a while and...
  15. 04fxdwgi25

    Pontoon navigation lights wiring.

  16. 04fxdwgi25

    Trailer driving lights do not work, what I've done so far...

    Fuse #15 in the engine compartment fuse box is for trailer parking / running lights. https://fuse-box.info/chevrolet/chevrolet-silverado-mk3-2014-2018-fuses-and-relay Your owner's manual should have all the info.
  17. 04fxdwgi25

    Removing trim senders screws

    Don't know if the plastic trim senders will survive that. If he plans on new ones, though, melt away.
  18. 04fxdwgi25

    Thunderbolt nightmare

    Hmmm. Ignition cut out switch on the shift cable maybe?
  19. 04fxdwgi25

    1978 trim motor issues

    2 wire or 3 wire motor? Check ebay, they have both Or, you could update with the newer, more reliable style.
  20. 04fxdwgi25

    8.7 Volts at the Coil

    Drew, Is yours a TB 4 or TB5? I have diagrams for both (and the shop manual for the 92-98 big block engines if you need it), if you need them Check 1. The big round plug that connects the engine harness to the boat for tightness / corrosion on the pins. (Had to replace the one I had on my 2550...
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