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Top Gun 500EFI’s Getting No Power

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Old 11-05-2024 | 03:23 PM
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Hatch is wired direct to battery so it always has power. Yes there should be a buss bar somewhere either under driver dash or pass dash. You mentioned an inverter clicking, do you mean battery charger or real inverter? If you have an inverter I would look at that. On my boat, shore power only gives 120 volts to battery charger and gfi outlet in cabin, no inverter
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Old 11-05-2024 | 03:39 PM
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Originally Posted by jbraun2828
Hatch is wired direct to battery so it always has power. Yes there should be a buss bar somewhere either under driver dash or pass dash. You mentioned an inverter clicking, do you mean battery charger or real inverter? If you have an inverter I would look at that. On my boat, shore power only gives 120 volts to battery charger and gfi outlet in cabin, no inverter
it was shore power inverter. I disconnected it for now.

the red wires in the picture go back towards the battery switch. I don’t see a bus bar anywhere. I might have to remove interior panels to gain access to port side gunnel
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Old 11-05-2024 | 03:40 PM
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Originally Posted by compedgemarine
so on the other side of the battery switch panel there are breakers at the bottom and a switch and gauge? in the middle. you have power at every single point there? is one of the circuit breakers power to the front switches for each side? not knowing how it was wired and just looking at pics makes it tough but if there are breakers in the rear that have power and then no power up front then it is in between which shouldnt have another connection point but who knows. with both failing is sounds like there is a hidden switch for theft protection or such in between that may have failed or was unknowingly turned off.
yes I have power at every single terminal at battery switch.
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Old 11-05-2024 | 03:43 PM
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Do you guys know where these red wires home run too…there has to be a bus bar near back of the boat.
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Old 11-05-2024 | 04:57 PM
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Do you have a fuse on your starter solenoids? Mine has them and they popped on me this year... theyre just a square white piece, that hot wire goes to. Had nothing at helm, as you did. Its possible they just popped when you hooked up batteris. If you turn key on, and theres no power at solenoid post, but power going to fuse post, then thats likely your issue.

www.ebay.com/itm/233708524436

Last edited by Got Cigs; 11-05-2024 at 05:03 PM.
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Old 11-05-2024 | 05:42 PM
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Originally Posted by Got Cigs
Do you have a fuse on your starter solenoids? Mine has them and they popped on me this year... theyre just a square white piece, that hot wire goes to. Had nothing at helm, as you did. Its possible they just popped when you hooked up batteris. If you turn key on, and theres no power at solenoid post, but power going to fuse post, then thats likely your issue.

www.ebay.com/itm/233708524436
ive already cleared engine, engine harness, and anything at the helm. I’m trying to figure out why I don’t have power from battery switches to cabin switch panel. Once that’s figured out I should be all set
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Old 11-08-2024 | 12:52 PM
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Starting to think I cooked the 90amp fuses on the starters…
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Old 11-08-2024 | 12:54 PM
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Originally Posted by Got Cigs
Do you have a fuse on your starter solenoids? Mine has them and they popped on me this year... theyre just a square white piece, that hot wire goes to. Had nothing at helm, as you did. Its possible they just popped when you hooked up batteris. If you turn key on, and theres no power at solenoid post, but power going to fuse post, then thats likely your issue.

www.ebay.com/itm/233708524436
i think this guys is the winner!!!!
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Old 11-08-2024 | 12:55 PM
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Originally Posted by 1MOSES1
Starting to think I cooked the 90amp fuses on the starters…
Those carry all the juice to the top on the engine and on to the helm... thought you checked those ? and why I said key ON check 12vdc on the starter relay

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Old 11-08-2024 | 01:27 PM
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Originally Posted by F-2 Speedy
Those carry all the juice to the top on the engine and on to the helm... thought you checked those ? and why I said key ON check 12vdc on the starter relay
I didn’t check power there. I gave power there to see if it worked. In hindsight, I probably should have checked power instead.

good times.
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