mx5cartalk.com

Hi,
Just purchased an NA with an SR20DET and s13 gearbox transplanted. I want the box (electric sender) to talk to the NA speedo (mechanical). The Nissan wiring has been spliced with the NA wiring (thus Nissan in the engine bay, NA wiring inside the cabin).

I could buy a Cable-X and use a modified NA cable.
or
I was thinking maybe an NB cluster but from my reading there is a lot of splicing, and then would be Nissan box send a signal to the NB speedo?
or
Can I extract the NB electric speedo drive from the cluster, but no guarantee of it talking to the Nissan box (would it just require some wires?) Odometer would not work.
or
An aftermarket speedo (no thanks).

How to make the odometer work? (Cable-X may be the solution).

I'm using my phone for a speedo but don't know if that is sufficient for a Roadworthy Certificate?

Give me your solutions! Thanks.

Which one did you buy Bruce (p.s. Congrats!!), any pictures of it?

Congrats Bruce!

Ad for the one recently for sale mentioned that speedo needed sorting, so sounds like that one.

Just thinking ... there are digital speedo options which can be set up independent of whatever you have in the car now. There are dedicated GPS units and apps for iPhone and Android which will do it accurately off GPS receivers. There are also aftermarket digital and analog face gauges that can run off a pulse from the existing gearbox sensor or else from installed sensors on the driveshaft.

Thanks guys. Pictures will follow. Yes, I purchased the one advertised recently.
I want to keep the original speedo face, so I don't want to go an aftermarket speedo. I use my phone atm (gps), but I don't think that will pass a Vic roadworthy (?)

Yup, I read about that. I have no idea if the speedo would read correctly.
I've been told about something better, a Dakota Digital ECD-100, with easy speed correction. Still gonna have to get a speedo cable modified to suit the MX, as the ECD comes with only a Ford or GM connectors (which look different).

Then to fix the tacho (hopefully only a wiring problem)... !

Sounds like you bought the one from the guy in bentleigh. That was a damn cheap car for the price.
It's a shame he sold it, but i guess that is your gain.

bruce wrote:...speedo. I use my phone atm (gps), but I don't think that will pass a Vic roadworthy (?)

Vicroads VSI 26 RWC Requirements says:
'Speedometer
Vehicles manufactured from 1 July 1988 must be fitted with a functioning speedometer calibrated in km/h'.

Think the argument would be the functioning one isn't fitted, & the fitted one isn't functioning.

Purchase a wireless bicylce unit, fitted and functioning, it should get you through a RWC.
Greg.

Yes, I've thought about all those things (including a bicycle speedo). Methinks I need to order the ECD-100 from the US and then get more confused installing it!
Thank god tachos are optional (DON"T ANYONE TELL ME THEY"RE A ROADWORTH ITEM).

Which ecu?

Stock Nissan with a Nisstune daughter board (all the Nissan boys use them). Trying to talk to a tuner now.
I'm hoping the tach is just a wiring problem (but then there's a LOT of wiring behind the dash).

Reading that the early S13 boxes were mechanical and the S15 electronic.

If yours is electronic, ask on some Datto forums (where people put SRs into 510s etc.) I think a mechanical driver from some L Series boxes might work.

Now I'm confused. Previous owner reckons electric drive in box, so it must be a later box than I thought (purchase invoice just says SR20DET gbox).
More head scratching.