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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > Swap JB4 N55 harness B to A?



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      03-03-2014, 05:33 AM   #1
markd325
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Swap JB4 N55 harness B to A?

Hi all

Thought I would post over here as specifically focused on the N55.
I think I have been an idiot and sourced a used JB4 Stage 2 N55 with the wrong TMAP Type. I thought I needed a Type B, but it appears as though mine is actually a Type A.

Does anyone know is it possible to swap over the harnesses, and if so, where would I source a Type A connector from. BMS dont seem to sell just the connectors on their own?

Thanks in advance
Mark

Last edited by markd325; 03-03-2014 at 05:43 AM..
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      03-03-2014, 07:02 AM   #2
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Quote:
Originally Posted by markd325 View Post
Hi all

Thought I would post over here as specifically focused on the N55.
I think I have been an idiot and sourced a used JB4 Stage 2 N55 with the wrong TMAP Type. I thought I needed a Type B, but it appears as though mine is actually a Type A.

Does anyone know is it possible to swap over the harnesses, and if so, where would I source a Type A connector from. BMS dont seem to sell just the connectors on their own?

Thanks in advance
Mark
Did you buy it directly from bms? they replaced mine when I made that mistake
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      03-03-2014, 07:04 AM   #3
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Originally Posted by emackin View Post
Did you buy it directly from bms? they replaced mine when I made that mistake
Thanks for the response. No bought second hand in the UK - 1st owner bought direct from BMS
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      03-03-2014, 07:08 AM   #4
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probably best to sell or see if you can buy another harness through bms
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      03-03-2014, 07:13 AM   #5
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Quote:
Originally Posted by emackin View Post
probably best to sell or see if you can buy another harness through bms
I think I may have to sell. BMS have come back to say they wont sell the connectors separately.
I did think maybe I could buy a TMAP sensor connector and fit this??? Can not seem to find the part number though
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      03-03-2014, 07:55 AM   #6
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I think you can purchase an entire harness not just the connector
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      03-03-2014, 08:17 AM   #7
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Yeah, just sell and re-buy. Not worth hacking your wiring up.
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      03-03-2014, 08:21 AM   #8
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Quote:
Originally Posted by JETmn View Post
Yeah, just sell and re-buy. Not worth hacking your wiring up.
Yeah will probably have to. Unfortunately they are very rare over here in UK, so may take me a long time! Has taken me a while to source this one!
Thanks
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      03-03-2014, 10:13 AM   #9
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If that were stage 1 I would buy it off you.
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      03-03-2014, 09:57 PM   #10
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if you need stage 1 harness A i have one for sale
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      03-03-2014, 11:01 PM   #11
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Yup your best bet is to resell and then buy it from BMS or one of the vendors on the forum
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      03-04-2014, 10:28 AM   #12
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Quote:
Originally Posted by ChOy BoY View Post
if you need stage 1 harness A i have one for sale
Thanks for the offer. Because they are really rare over here, I would prefer to keep the unit intact, and sell as a complete unit.
Thanks though
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      03-04-2014, 10:33 AM   #13
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Quote:
Originally Posted by markd325 View Post
Thanks for the offer. Because they are really rare over here, I would prefer to keep the unit intact, and sell as a complete unit.
Thanks though
no i was offering you my whole JB4 lol. It's stage 1 and harness A..wasn't looking to part any of it out or have you part out yours.
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      05-03-2015, 02:02 AM   #14
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Longshot... But harness A still available?
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      05-04-2015, 12:34 PM   #15
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Hi there
I do still have it but planning on keeping it until I sell the unit then selling as either a or b - then sell whichever harness is left
Thanks
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      05-11-2015, 11:16 AM   #16
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Trade?

I have a type A harness and need the Type B harness for the stage 2 JB4. Would you want to trade?
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      07-10-2018, 01:38 PM   #17
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I currently have an a harness and would like to swap for a b harness !
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