RZtwin Posted August 5, 2012 Share Posted August 5, 2012 Can someone plz lead me to a clear diagram on how to install the Greddy bcc to my 93 jdm Supra? Also does it change if I have a Greddy speed cut already installed, or Greddy protec-b II I plan to install at a later time. Thank you for the help! Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted August 8, 2012 Share Posted August 8, 2012 Red from BCC to ignition switched 12 volt feed, Black to chassis ground, cut the yellow wire with black tracer from the MAP sensor to the ecu, near the ecu itself. You then have two ends of yellow / black wire. The end going to the ecu is joined to the blue wire on the BCC. The green wire from the BCC goes to the other end of the yellow/ black wire that goes to the MAP sensor. Quote Link to comment Share on other sites More sharing options...
JayRZ93 Posted March 4, 2013 Share Posted March 4, 2013 Red from BCC to ignition switched 12 volt feed, Black to chassis ground, cut the yellow wire with black tracer from the MAP sensor to the ecu, near the ecu itself. You then have two ends of yellow / black wire. The end going to the ecu is joined to the blue wire on the BCC. The green wire from the BCC goes to the other end of the yellow/ black wire that goes to the MAP sensor. Hey Chris, my Greddy BCC has a WHITE, BLACK, GREEN, RED wires only. No Blue.. I guess I have the older version bcc. It Says " "type 3S-GT(SW20)" on the front. Can you clear me up on which ecu pin out, the green and white wire from the bcc, go to on my JDM Supra TT ECU? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted March 4, 2013 Share Posted March 4, 2013 Not sure on that then, you need to read the instruction sheet that comes with it. Quote Link to comment Share on other sites More sharing options...
st3ven1 Posted March 4, 2013 Share Posted March 4, 2013 "SW20" refers to an MR2(and in this case I would suggest turbo), so might be worth finding a copy of MR2 instructions to see which wire is which. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted March 4, 2013 Share Posted March 4, 2013 If you get stuck, just use red and black as described, for the ignition switched power feed, then try the green and white both ways. It won't do any harm, but incorrectly wired the engine will either not run at all, or run incredibly badly. Quote Link to comment Share on other sites More sharing options...
JayRZ93 Posted March 4, 2013 Share Posted March 4, 2013 Thanks Chris:) Quote Link to comment Share on other sites More sharing options...
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