@landtank the yellow is output, the black is negative, the green is input, and the red is positive. You can also see an extra yellow plug zip tied to the end. I also included a photo of deep into the glove box where I can see all four wires of the same color of the wires coming out of the unit...
It's not off by like 5 or even 15mph, it's showing the speedo pegged at like 30-40mph. 37's might be in the future once I get through all the maintenance stuff I want to do first.
@landtank Do you remember how long ago you wrote the procedure? Just trying to narrow down how far back to look. This is a picture of behind the glove box and I didn’t see a yellow box but I’ll look again.
It’s funny you mentioned that because I had ordered the lutzauto piece Monday as I was trying to figure out the yellow box issue. I think the challenge I’m having is that it feels like whoever installed the yellow box to begin with may have spliced wires rather than use a harness. If that’s the...
This photo above is a little misleading because the wires from the side plug are separate from the plug that you see in the top on the back.
side view similar to the front.
This is where I'm a little confused, the red/black/white wires don't connect to the big white plug you see. The...
Would you mind taking a photo of the OEM harness that the yellow box is plugged into. Mine looks identical to the photo you posted but just want to make sure I’m plugging in and unplugging the right stuff.
This may be a silly question but I thought the yellow box was installed behind the glove box and not under the car by the transmission. I have to look around tomorrow to see if I see it. Assuming it’s the yellow box, I imagine the OEM harness will work but still be off but by a smaller amount...
Recently bought my buddy's 96 80 series that has 4.88 gears and 35's. He's had intermittent issues with the speedometer the last two years where he'd be driving at like 30mph and the dash is reading 120mph. Bought the car on Saturday and have driven maybe 120-150miles since then but because...