B16a Swap Problems / Need Help

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Junior Member
Just got the B16 into my 1990 CRX Si. Few problems, First I ordered an
LSD trans with this motor and my speedo cable does not hook up, it appears
to be an electrical speedo??? Is this right?? Will I be able to use my
existing speedo and cable?? there is a plug on what appears to be a speedo
hook-up but my cable is to short anyone have this problem?? Second I
need correct axle for drivers side, what car will this be from?? Lastly
the big off-white multi-pin connector is different from the connector on
the car side can I just remove pins and match color to color?? thanks for
any and all help.


Junior Member
I just finished this swap. I had a B16 from an XSi. If that is the one you have(S1,YS1 tranny), you will need the pass side from a 90-93 Teg(usdm), and the drivers side from a 87-89 Teg(usdm). Sounds like you did the exact same thing I did. You should have swapped the CRX engine harness from the stock engine to the B16 when they were out. It is a royal(dirty too) pain in the ass, but you need to swap out the engine harnesses. Then you will need to run a few wires and do some work at the ECU and around the Dist and sensors. I am an electrical engineer, and I noticed the amount of work invovled trying to make the B16 harness work, and opted to use the original one. It's your choice, i know I made the easier descision. I didn't have the Si, I had a dx, so I had a lot more work. Mainly you will need to hook up for V-Tec, and change some wires at the ECU. Good luck...


Junior Member
yea sounds like we had same swaps. withe the SI though all connectors are same except one, the one off-white near the master cylinder. If I can just match color for color on connector that would work too. Can I do that??? Oh also what about map sensor vacuum hookups. do you have pic or diagram??