fuel gauge folly

MoparMike1974 said

Not all of them have the voltage regulator built into the fuel gauge. In fact, most of them do not. Meter match is running a standard 7805 regulator and wont power more than one gauge. So, you need another regulator if you want to use the oem temp gauge.
Have you even installed a meter match before? What I said is not "difficult and pointless", in order to use the meter match it runs off its own regulator.
I dont use 50 year old regulators, I install my own additional 7805 on a heatsink along with the meter match. Much safer than risking the bi-metal type and having the contacts stick closed and frying the gauges. Although in 30 years of owning mopars I have only had them go open, I know its a possibility for them to hang closed.

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sorry, my mistake the rally dashes are the only ones with the regulator built into the fuel gauge.

The high current version of the 7805 regulator, with a proper heat sink will power all the gauges. Look here on the forum. There are tons of examples of people replacing their IVR with a single 7805. Too lazy to do the math again, but I believe it runs about 1/2 rated current at full scale on all gauges.

I am not familiar with the Meter Match with the built in regulator, as I didn’t consider it useful for this application for reasons previously stated. It may be using a lower power 7805, however I suspect they rate it for only one gauge due to the size of the heat sink. 7805 regulators are very sensitive to heat sink size. To small and the current capacity goes way down.

Not trying to be a jerk, but I still don’t understand why you would pay the extra money for a meter match with a regulator when one IVR would work fine. Could be done your way, I just don’t see the point.