BEAMS gauges in celica GT Options

[match220]

Hey guys,
I bought some BEAMS gauges a while back to put in my celica to take advantage of the tach signal from the ECU (i'm running engine management and no distributor). I heard these were a direct swap, but my fuel gauge isn't working when I put them in. I waited a couple minutes and the gauge didn't climb with the ignition switch turned. Can someone verify that these gauges work in this car?

This post has been edited by match220: Jun 16, 2014 - 6:06 AM

[match220]

So now I'm comparing the circuitry on the back of these gauges (My celica M/T and the BEAMS celica A/T), the pinout for the RPM needle is different.

RPM gauge
My gauges have IG- as pin A10 on connector A (rightmost connector when looking at the back of the gauges). The BEAMS gauges have a different RPM signal, so it's an IG+ connection on pin A6 on connector A. When I trace out the circuit connected to the A6 pin it connects to the battery indicator light bulb. So..if I were to put the BEAMS gauges into the car it would be just like hardwiring the battery indicator light into the IG+ signal. Maybe this is different since I bought BEAMS auto gauges, I don't know. The BEAMS RPM gauge can be removed and inserted into my celica gauges with no problem. I just hope I didn't fry the circuitry in the BEAMS gauges by running the signal for the battery light through it. I should also mention that I have a set of GTFour/ST205 gauges, and they use pin A6 for the rpm signal as well. Which means plugging in the ST205 cluster would have the same effect.

Fuel gauge
BEAMS gauges circuitry connect the top screw on the fuel gauge to pin C1 on the C connector (leftmost connector when looking at the back), while my gauges connect to B14 which connects to an unknown screw behind the speedo on the BEAMS gauges. The others may be different also, I stopped checking after I noticed one was different. This is why my fuel gauge doesn't work when the BEAMS gauges are connected. Do you have a detailed picture of the circuitry on the back of your BEAMS M/T gauges? I can't trace out this circuit on the ST205 gauges without taking one of the circuit film layers off.

I'm going to start working on a pinout conversion for these gauges and document everything with notes and pictures. These A/T BEAMS gauges I bought have a ton of lights to use for indicator lights. The circuitboard for the shift indicator lights is simple, plus there are extra indicator lights, once I get the pinout down I we can start using the indicator lights for other things.

Is there a chance that the 94/95 US celica gauges have a different pinout than the 96 - 99?

This post has been edited by match220: Jun 19, 2014 - 1:29 AM