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Thread: 3 Channel ABS Standalone Harness

  1. #1
    Join Date
    Feb 2007
    Location
    Springfield, IL
    Posts
    2,490
    My Cars
    '95m3(Avus)/996tt/4.8is

    3 Channel ABS Standalone Harness

    Anyone have enough experience with a race harness for a 3 channel ABS system to lend some advice?

    How many fuses do I need to include? On the ETM, there shows a 5 amp, 15 amp, and 30 amp. Do I need all three or can it be simplified to a single fuse?

    Do I need to buy a special relay or will any generic 30/40 amp Bosch relay work?

    Is there any way I can wire the diagnostics wires (incoming/outgoing) into my OBD2 plug for a particular diag reader or do I need to track down an x20 and buy a x20 scanner?

    Thanks very much in advance for any input! Looking forward to having ABS for the first time in a LONG TIME.

  2. #2
    Join Date
    Jan 2004
    Location
    Ottawa, ON, Canada
    Posts
    4,937
    My Cars
    e90 M3,X5,e46 racer
    The 30 amp is for the pump, keep that separate. The other 2 can be combined. Nothin special about the relays, but the OE ones are really quite good.

    Going to all this trouble, I would be really tempted to do 4ch, even the MK60 form a e46 (non M) is worlds better than the crappy 3 channel e36 one. I build the harness for a 4ch from a stock harness, it's not that bad, just time consuming like all other wiring jobs
    Check out the 8legs Racing page: https://www.facebook.com/8legsRacing/


  3. #3
    Join Date
    Feb 2007
    Location
    Springfield, IL
    Posts
    2,490
    My Cars
    '95m3(Avus)/996tt/4.8is
    Wish I had a spare harness to use! Having to wire it all in myself.

    Anyone with a scrap/junk/cut engine harness for a 3 ch system want to hook a driver up?

    Looked at different systems and may very well upgrade to a 4 channel in the future, but bought another BFC's hardware for so cheap I couldn't pass it up. Already way too deep into this build considering it's just an HPDE toy!
    Thanks for the input Scotch!
    Last edited by olemiss540; 02-20-2019 at 01:46 PM.

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