Hi everyone

 

I'm currently in the process of fitting an electronic speedo converter to my Z, but having a little trouble. Its a JDM one that reading in KPH, so I got hold of one of those little chips off the internet to convert it.

 

I believe I've successfully spliced it into the speed sensor line that runs into the back of the speedo gauge, but I also need to connect it to a (+12v) line and (Neg) line and am having trouble finding a suitable one. Does anyone have any suggestions? The cables attached to the converter are about 4 inches long so they have to be fairly close to the socket in the back of the speedo gauge.

 

Cheers for the input!

John

What series zed do you have as the clocks have various designs at the back !

 

But all connections can be attached directly without cutting into tracks.

It's a 1990 N/A Auto. I believe it is a Series 1 cluster as the plug for the speedo attaches vertically, not horizontally (looking at this picture http://www.zcentre.co.uk/components/com_virtuemart/shop_image/product/photo11%20609%20series%201%20and%202%20copy.jpg)

 

Cheers

Ok look to the rear of the speedo and you will see 4 screws, 1+ve, 1-ve, 1signal, there is a diagram in the tech section http://www.300zx.co.uk/forums/showthread.php?117157-speedo-delimiter-box-wiring

Thanks for the reply Groover.

 

Had a look at the link, the image wouldn't display but I think I know which bit you mean now:

 

 

Is it that bit I circled in red?

 

Cheers

in the adress in the link change forum to forums, then it will open

and yes those screws

Will get Lee to sort the link, here is the pdf for same

 

speedo delimiter box wiring.pdf

 

I have a diagram to the plugs if required, but using the screws is easier

Cracking info, cheers everyone!

 

John

Are these kph to mph converters reliable? Is that the best way of doing it without forking out for UK clocks?

Link fixed !!

 

Will get Lee to sort the link

There are nasty ones on ebay which i dont personally think work to great but i highly recomend the zcentre one.

 

Bit more expensive but more reliable.

 

Are these kph to mph converters reliable? Is that the best way of doing it without forking out for UK clocks?

saying that just checked out there prices and they've doubled since i lost bought one !

 

http://www.zcentre.co.uk/index.php?page=shop.product_details&flypage=flypage.pbv.tpl&product_id=171&category_id=73&option=com_virtuemart&Itemid=7

LOL... at that price it's cheaper to get UK clocks.... :)

I know; i mind only buying it off him for less than £45 at one point !

 

LOL... at that price it's cheaper to get UK clocks.... :)

Well got it all fitted and seems to be working well enough. It makes the speedo a little unresponsive below 10mph but seems to read correctly. I'm a lot happier driving without having to convert the kph to mph in my head!

 

Cheers everyone

Under 10mph inactive, is usual with some convertors, but its not important enough to worry about. Glad you got it sorted :thumbup:

Thanks for the input guys, yeah that is bloody expensive for a little box but I do prefer the uncluttered look of the kph dials. You're good with electronics Groover, ever fancied making them? But not selling them for £100:biggrin:

Or if you dont want to go very fast just fit a 120 mph dial to the clocks

Thanks for the input guys, yeah that is bloody expensive for a little box but I do prefer the uncluttered look of the kph dials. You're good with electronics Groover, ever fancied making them? But not selling them for £100:biggrin:

 

I wouldnt have thought there was much in the box, its basically a resistor board to slow the signal down, if anyone has an old one or duff one i could take one apart.