GPS sender for speedometer

Gdub310 said

I did something similar. I didn't want to try driving a freeze plug into the opening with the trans under the car, so I removed the stock speedo housing, drilled and tapped it for a plug, used some high-temp thread sealant (Permatex 59235) on it, and put it back in the trans without the cable.

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I hadn’t thought about the room needed to drive the plug in with the transmission in the car.

This seems like a neat alternative, just tap and plug it.

Do you lose a lot of fluid when the adapter is removed? Just trying to plan because either way it will have to be removed. Either temporarily while it’s plugged or while the freeze plug is attempted.

Thanks again.