Cluster gauge issue

[Lovetherange]

So I took a instrument cluster from. 93 6 cylinder ranger and stuck it into my 94 2.3l 4 cylinder for the tach considering mine did not come with one... through research I have found that it is rarely plug and play... well I have gotten a response from the tach needle(not sure how accurate, please let me know if I can adjust this) the speedometer seems to be a little further off so I may swap the speedo needle from the 94 cluster for better accuracy... the problem I have is this, my gas gauge now doesn’t work... when I turn on the vehicle it goes past full and works down to below empty and stays there... the other cluster the gas gauge half worked... ergo it would work at a quarter, half and full... any advice? Thanks a million in advance.

 

[Locotomb]

You probably need to ground your tach. If the positive wire is correct and without a proper ground it will display high and erratic. Not sure about the wiring on the 93 but printed circuits are possibly shared causing your fuel gauge issue. Nevertheless, you should be able to trace the tach ground circuit back to the pin that needs grounding.

 

[tinman_72]

I used a cluster from a '94 v6 in my '93 four banger. I pulled the speedo out of the '93 cluster, stuck it into the '94 cluster. After that the whole cluster was plug and play. No rewiring or adjusting necessary.