The gauges aren't that hard to get working. The stock alt wiring can be used on the KA alt so that's super easy pretty much plug and play. The temp gauge, all you do is find the temp wire in the KA harness and connect it to the stock one. The speedo on the other hand is the PITA!! I did a search on here and got a few answers. This is one reason why the old classifieds were way better than the new system http://community.ratsun.net/topic/10901-280zx-speed-sensor/ So I set out looking for the speedo gear drive out of a zx or 720 pu with the correct offset. Came across this website so I ordered one from http://www.datsunstore.com/ Not 2 days later I found a 84 720 4x4 in a jy and pulled the unit out of it just to have both. Well the teeth on the drive gear for both the z and 720 are smaller than the KA unit, so they don't mesh inside the tranny and don't work. What I ended up doing was demolishing the stock KA electric unit to pull the gear drive out of it. Slotted a key way in it for the speedo cable and used the gear housing out of the 720. Works great! And I've checked my speed via gps and it's tits!