[Hitman23x]

Hey guys, so i bought a used JB4 online, i believe it has the G4 board.
Anyways i know there are a lot of DIYs out there but I'm confused on one thing.
There are these three wires that are loose and i don't know where they go.

I believe the red wire would be for power and i would have to make a pin connector for it (I think)

Not really sure where the yellow and black wires go?

Any help would be greatly appreciated.

My car is a 2008 BMW 335xi

[monoid]

Check this video it might help you install it.

[Snypa]

Get MHD and be done.

[monoid]

Everything starts with the JB4 after that MHD backend flash

[Hitman23x]

Ok let me clarify, I've watched every video out there before posting here.
None of the videos or pictures online show THREE SINGLE WIRES, the videos at the end show the RED wire is connected for power and that's it after clipping together all the other plugs in the ECU.

I dont see instructions on the black or yellow wire.

And let's say the black is ground then what's yellow for?

Is there maybe a wiring diagram or something that would tell me what the pins on the JB4 plug correspond to?

I know I should have bought a new one but i figured I can save some money Im pretty sure the thing is legit just need some guidance

Thank you for your efforts!

Oh and by the way, I do have MHD but i want to install the JB4 first.

[MysticRob]

Originally Posted by Hitman23x

Ok let me clarify, I've watched every video out there before posting here.
None of the videos or pictures online show THREE SINGLE WIRES, the videos at the end show the RED wire is connected for power and that's it after clipping together all the other plugs in the ECU.

I dont see instructions on the black or yellow wire.

And let's say the black is ground then what's yellow for?

Is there maybe a wiring diagram or something that would tell me what the pins on the JB4 plug correspond to?

I know I should have bought a new one but i figured I can save some money Im pretty sure the thing is legit just need some guidance

Thank you for your efforts!

Oh and by the way, I do have MHD but i want to install the JB4 first.

Do you kind of get the feeling there's something odd about your specific JB4?
Considering you're asking questions here and not directly to BMS, did you happen to buy it 2nd hand from someone who isn't able to answer those questions? Wouldn't the seller be able to tell you?

[Jeff@TopGearSolutions]

Are those 3 wires for a 2 step or Speed limit defeat? Just throwing that out there.

[Hitman23x]

Originally Posted by MysticRob

Do you kind of get the feeling there's something odd about your specific JB4?
Considering you're asking questions here and not directly to BMS, did you happen to buy it 2nd hand from someone who isn't able to answer those questions? Wouldn't the seller be able to tell you?

I did contact the seller the reason he was selling it was because he has an N55 and so it's not compatible with his. When i had him ask who he got it from the guy told him "They're Ground Wires"

Also Im not quite sure what you meant my BMS. Did i post my question in the wrong area?

[Hitman23x]

Originally Posted by Jeff@TopGearSolutions

Are those 3 wires for a 2 step or Speed limit defeat? Just throwing that out there.

Thanks I'll look into that and ask the seller