If you still have the Ap2 cluster around, plug it in and check. This will provide you a base whether it is the car or the cluster unit. Second, I would double check your soldering.

 

I had a problem with some lights not working on my ap2 cluster in my ap1. Turns out to be a bad ground. Check the ground near the driver's side fuse box. Make sure the bolt is down tight.

 

Can u tell me which is the ground close to the fuse box, thanks

 

Thanks taiphon, i wish i have an extra cluster but i dont, the gauge was stolen, is there is anybobody who can let me barrow one or i can put my cluster to their car so i know if its going to work, i have an ap1 cluster,any volunteers that will be appreciated, anybody in socal nice enough to do the test, i also have a shop, maybe i can help also, thanks in advance