LS-1 Conversion Gauges

I've got a 1990 Chevy 1500 that I put a LS-1 out of a 2000 Trans Am. I purchased the painless wiring harness for the engine, along with a brand new computer. I want to build my own instrument cluster with mechanical Auto Meter gauges. I'm not too familiar with the LS-1, and I don't want the computer to set the check engine light. The gauges that cam stock in the truck from the factory are the kind with the grey background that moves around instead of the normal needle style, so the stock truck gauges are out. I would appreciate any help or suggestions. Thanks.

its been done so there is info out there somewear

I will also be doing this in the future so some info and or pics would be nice.

Lets see if I can remember how this goes... The computer tach signal works fine with an aftermarket tach, with the tach setting on 4 cylinder. The speedo signal from the computer works also, IF the computer output is reflashed for your particular rear gear ratio, tire diameter, etc. Oil pressure signal from the computer works perfect, as is, with an anolog aftermarket gauge. Same with the temperature. The fuel level is stand-alone with your truck & not tied into the computer. RedHeartBeat or NITROUS can correct my memory if I'm off on this info. These gauge questions have been asked so many times here, that it can definately be found with research as well. Good Luck with your project.

i used a brass adapter and an auto meter oil sender for the oil pressure guage ......... for the water temp guage i used the other plug in the head and used an auto meter sender for water temp.

dont remember exactly the sizes ..... but they are both metric threads to 1/8npt...... just f.y.i