I bought a Mechanical Autometer Water Temp Gauge and was wondering where a good place would be to tap the sensor into. I have a 90 Eclipse GSX. It says to tap into the thermostat housing, but we all know how crowded that is. Would I be able to remove my coolant sensor and put this one in its place?? Or do I have to find a different spot to tap into. Thanks for any help!

There are typically 2 sensors for coolant temp. One for the guage, and one for the ECU. Find the one for the guage (single wire, not two, IIRC) and replace that one.

the greddy temp sensor splices the radior hose and the sensor fits in between, its ez to install

http://projectgsx.com/pics/mods/gauges/water_probe_installed_clamp.jpg

Cool, thanks!