[MasterWang]

BIMMERPOST / Classifieds

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I just bought a used jb4 from a member here...I just received it today and it is missing 2 pins (2 & 15). He is saying that it should still work perfectly without those two pins, but then why are all the other jb4's I've seen not missing these two pins. Someone please chime in and help me out here. Is it even "Safe" to install this jb4 with the missing pins?

[iBoost]

email terry! i doubt its safe

[E90PAT]

most likely an older harness, email terry

[e90TiAg335i]

2 is not used and 15 is only used for meth failsafe input. It is safe to use as is.

[Randomaccess335]

FSB "Type B" N54 Wiring:
1) Remove the JB4 control box from the AMP connector and remove the two screws holding the AMP connector together. Upon removing the case you'll insert the FSB orange wire in to position #2 and the blue wire in to position #15. These will be the only open slots in the connector. They are numbered on both the front and back so check before pushing the pin in. If you lock the pin in the wrong spot by mistake you will need to go to Radio Shack or an electronics store to get an inexpensive tool called a "DSUB pin removal tool" to extract the pin and place it in the right slot. If you manage to damage a pin you can replace it with any male DSUB pin.

[e90TiAg335i]

Originally Posted by Randomaccess335

FSB "Type B" N54 Wiring:
1) Remove the JB4 control box from the AMP connector and remove the two screws holding the AMP connector together. Upon removing the case you'll insert the FSB orange wire in to position #2 and the blue wire in to position #15. These will be the only open slots in the connector. They are numbered on both the front and back so check before pushing the pin in. If you lock the pin in the wrong spot by mistake you will need to go to Radio Shack or an electronics store to get an inexpensive tool called a "DSUB pin removal tool" to extract the pin and place it in the right slot. If you manage to damage a pin you can replace it with any male DSUB pin.

There you have it, not needed!

[scorpnaz7]

Mine looks just like yours, it did not come with those 2 pins.