I just completed a tuned port swap in my 91 bird. I used the SD extra length TPI harness from painless.

LEt me tell you, this harness was great. Everything labeled, i highly reccomend it.

I do have a few questions though. The only thing that does not work is my speedo.

I know my 730 ecm has an internal buffer, and i know the vss is hooked up. But yet, i still have a dead speedo, which worked before.

Since i used the painless harness, am i missing a signal coming from the ecm or something?

Any help would be great.

Thanks