The RPM and MPH gauge do not work but everything else on the gauge cluster does work inside my 1990 ls 2 dr 5 spd. The car turned over before and idled, but now it wont turn over at all. After I checked the fuses i removed the cluster. Directly behind the cluster there was a piece which i believe adapts to a speedo cable, not sure, and there was nothing attached to it. So maybe thats my problem. But now that i connected the cluster back together(untill i purchase another one) the car wont crank over. I checked the battery cables to see if they were loose, no. Fuses, no. Ground, no. My head lights wont turn on anymore either. When the key is on the ON position my check engine light turns on then off like it should but then i press on the brakes and the temperature gauge goes all the way to HOT??

Before, when the car turned on i did have a CEL but my ecu wouldnt throw any codes. I had a buddy of mine change the alternator the day i discovered this issue(about the car not wanting to crank over) because it needed a new one. When it did turn on, at first, it would idle up and down for a minute or so then eventually it would idle smoothly. The intake manifold needs a lot of the vaccume ports capped off. The car does have an exhaust leak which i plan on fixing as soon so i can turn my car on! I do have another OBD0 ls ecu i am going to switch to see if my ecu is dead. Other than that i do not know what it is. I have owned 4 Honda's before, 1 EK hatch, 3 EG hatches, 1 Crx and this is my 1st Integra that i do plan to keep. Another words im not a newbie im just a newbie to Integra's and OBD0 stuff(which im going to convert to OBD1). Any help please i'd really appreciate it, thanks!

p.s. sorry for the long question and if you needed anything cleared up from me please let me know i wanna get my car running already so i can drive it!!!