oil pressure/temp instal guide
Note: These gauges are made by Autometer and deals specifically with instalation of that particular brand. Gauges of other brand might require different methods to instal properly. However, this guide should still come as a handy reference guide.
Autometers 2-1/16" Ultralite Pro-Comp electrical gauges
Electrical vs Mechanical, what's the difference? It's simple, really. A mechanical type uses a direct acting mechanism to send data to the gauge. In theory, this should provide 100% accuracy. An electrical type transforms the mechanical data to electrical data before sending to the gauge. Improperly calibrated readings of electrical signals increases the chance of false readings. This variable is not present in a mechanical gauge. But, assuming the settings on an electrical gauge is spot on, it should have the accuracy of a mechanical gauge. I wouldn't worry about deciding which is best as they are both proven to be dependable. The tach/speed meter and new drive-by-wire throtle bodies on the Celica are all electrical. If made correctly, it can be very accurate.
OIL PRESSURE SENDER
This is the perfect place to tap in for pressure readings. Even Toyota thinks so. There's another location on the head for the 2ZZ-GE but I personally think this is the best location.
:1/8" NPT female to 1/8-29 BSPT male adapter
:1/8" NPT T-fitting
:crescent wrench or 24mm deep socket
Disconnect the wiring and unscrew the oil pressure switch. Remove any remaining Locktite residue on the thread and block. Screw the 1/8" NPT T-fitting to the 1/8" NPT-1/8-29 BSPT adapter before bolting it on the block. Bolt the adapter to the block. Screw in the stock pressure switch and the oil pressure sender on the T-fitting. Coat all threads with teflon tape.
Note: Be very carefull not to apply excessive weight to the T-fitting when screwing on the oil sender and switch.
Note: It would be wise to isolate the oil pressure sender from the block to avoid possible wear and failure. A high pressure hose and additional fittings are needed.
Thank you very much!! You were a big help