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See full version: Thread: Hooked up battery backwards, no spark


flemingo
19.06.2021 8:16:45

It is very possibly you have fried both these ground wires and now have an electrically isolated e-box. With no ground going to the spark coil (you called it a CDI) you will have no spark.


maye
17.06.2021 7:09:19

This ground wire can be accessed from the pyramid domed cover on the front of the e-box. This is where the 6 pin connector (only 5 used) is located. someone else mentioned this earlier.


michaelboyd85
24.05.2021 10:23:41

Jerry Rigging is my specialty . here


ansible adams
27.05.2021 11:11:56

if i did like everyone else and copied everything i needed or wanted i would save lots of time and money . here


XaviorPenguin
05.06.2021 21:48:31

If it is a 1991 or later 550SX model there is a fuse inside the electrical box. Hooking up the battery backwards will blow this fuse. Please don't ask me how I know this.
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williambruss112
02.05.2021 9:11:29

Someone will know and chime in, but check for an inline fuse in the Ebox. My buddy did that to my FX-1 out on the beach and it popped the fuse but everything else was fine.


michelles
08.05.2021 16:00:54

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28.05.2021 10:53:02

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05.06.2021 9:08:06

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xloem
23.06.2021 10:44:04


astrid01
28.04.2021 0:46:03

The problem is it has no spark at the main plug leads. Previous owner told me this was the fault also.


JohnnieMc
23.06.2021 12:52:46

Id like to know how to test the output of the trigger in the mag cover.


kiav
02.05.2021 21:27:15

Ive put a 12v test light and earthed it direct to earth lead from the battery on the engine and probed the white wire going to the coil in the rear black electrical box where the starter solenoid is. The test light DID NOT flash. I tested this with the spark plugs out while cranking over. I tested continuity from the same white wire up to the large plugs at the mpem. There IS continuity.


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10.06.2021 1:26:22

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08.06.2021 2:51:09

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08.05.2021 18:12:22

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14.05.2021 12:27:44

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22.05.2021 13:27:03

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