So i found a speedo with a tach out of a 90 civic hatch and need to put it into my 91 that had no tach. I noticed that the pins do not correctly align, does anyone have the diagram of how to wire my 91 so it works with the 90 tach/speedo?

 

Does this help?
http://img63.exs.cx/my.php?loc...t.jpg

Got it here:
https://honda-tech.com/zerothread?id=1073157

Hoping it does, I am not a wiring master but I did some searching and that looked like it would help me when I plan on doing something similar.

 

Are you talking about a guage/instrument cluster?

If you are talking about putting a '90 civic guage cluster into you '91, there are no wiring difference and it is a straight swap.

If you are not talking about guage clusters, refer to the post above mine.

 

i was talking about a gauge cluster, but i had three plugs on the back of the cluster in my 91 civic dx, plus the speedometer, the normal two and the third is a small blue one. The cluster i got only has two and the speedometer, is there a way to adapt it to work in my dx?