R33 GTR Speedo & 3-Din Upgrade

[itsforandres]

hello! i see a lot of people on here have done the upgrade of the OEM speedo to one that hits 320km. is this a straightforward swap, like 1:1, or is there something else that needs to be done to ensure that it works properly. i have the speedo, and the 3-din that match (nismo white face) but wanted to get some input before i actually start this.

some questions:

1. can i remove the current equipment and just plug in the upgrades and be done with is?
2. is there a way to bench-test the speedo and 3-din module?
   1. the speedo seems to have a 2-pin plug on the back of the driver's side
   2. the 3-din has IGN and GRN marked
   3. can i just hook those up to a 12v power supply? my fear is frying these things.
3. Is there a way to set the mileage on the odometer to match my current count? the current one is at about 148k and the new one is at about 28k

thanks in advance!

[Duncan]

1. Yes, assuming they are for the same make/model

2. Sort of, you can power them up by applying 12v to the + and - pins (if you can identify them). Eg, take a battery, put a small fuse on the + side and hook it up. But that won't tell you if the gauges work, they will need proper inputs. Just do step 1

3. Not really, and there is no check. Just do step 1 and keep the old dash, if you are concerned take a pic of the klm on your old and new dash on the same day to show the delta.

Basically if they are correct for your car, it is a simple case of disassembling the dash fascia, unscrewing and unplugging the old on, and plugging in the new one. Before you do is a good time to check all the globes are present and work in the new dash

[itsforandres]

thanks, @Duncan! i wanted to power them on just to get the bulbs in correctly. i am changing them to LED and if you don't get the polarity right, you have to pull out the dash and pop them out. again, i appreciate the input.

[joshuaho96]

If you have a weird thing about how you don't like the insane range of the 320 km/h Nismo meters and for some reason their coloring of the 8-9k range as yellow rather than redline I'm pretty sure you can just adjust the speedo calibration resistors and replace the gauge face with whatever corresponds to your desired calibration. You could make a 300 km/h speedo that way I believe like the Impul ones that were basically identical to factory other than the speed calibration change.

[Duncan]

Yep, good time to install and check all LEDs. Keep in mind you need to apply 12v to the lighting + not dash + to light them up

[itsforandres]

On 4/14/2022 at 5:57 PM, joshuaho96 said:

If you have a weird thing about how you don't like the insane range of the 320 km/h Nismo meters and for some reason their coloring of the 8-9k range as yellow rather than redline I'm pretty sure you can just adjust the speedo calibration resistors and replace the gauge face with whatever corresponds to your desired calibration. You could make a 300 km/h speedo that way I believe like the Impul ones that were basically identical to factory other than the speed calibration change.

@joshuaho96 - it ends up working out, as the v-cam will be pushing me into the 8,800 range, once completed.