Speedo conversion with mile odometer & trip
Moderators: Doone, westonwarrior
Mazda instruments
You should find that the Mazda 626 is also identical. That shared a chassis with the MX6 - much underrated cards in my opinion.
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- Bongolier
- Posts: 396
- Joined: Tue Jan 30, 2007 8:22 pm
- Location: bradford, west ridings of yorkshire
just done mine folks
what a difference it makes
instead of judging your speed by other cars or taking a bit off cos it`s running fast etc at lower speeds
cor blimey the speed it says is the speed ya doing sort of
and the odometer clocks up in mph easy peasy
proper top tip
what a difference it makes
instead of judging your speed by other cars or taking a bit off cos it`s running fast etc at lower speeds
cor blimey the speed it says is the speed ya doing sort of
and the odometer clocks up in mph easy peasy
proper top tip
ECKY THUMP
the one true art form
the one true art form
- maxheadroom
- Supreme Being
- Posts: 1950
- Joined: Wed Feb 28, 2007 6:37 pm
- Location: Gloucester
speedo
hi might be a stupid question but how do you convert klms to miles? bongo is reading 115599 so what would this be in miles? 

- maxheadroom
- Supreme Being
- Posts: 1950
- Joined: Wed Feb 28, 2007 6:37 pm
- Location: Gloucester
Hi all,
Just to confirm that the speedo out of a Mazda 626 will fit a Bongo to.
As I do I popped into the local breakers for a root around and found a Mazda 626 on a P reg, 6 screws later and the speedo was out.
So if you are on the look out for a MPH speedo with mile odometer & trip the 625 & MX6 on mid 90’s will fit.
Code on the speedo face is GA5R
Happy hunting…
Just to confirm that the speedo out of a Mazda 626 will fit a Bongo to.
As I do I popped into the local breakers for a root around and found a Mazda 626 on a P reg, 6 screws later and the speedo was out.
So if you are on the look out for a MPH speedo with mile odometer & trip the 625 & MX6 on mid 90’s will fit.
Code on the speedo face is GA5R
Happy hunting…
Speedo
Yep, My 626 was a '96 and I guess any model up to the facelift version will do.
- alphabetter
- Bongolier
- Posts: 214
- Joined: Wed Feb 08, 2006 10:51 pm
- maxheadroom
- Supreme Being
- Posts: 1950
- Joined: Wed Feb 28, 2007 6:37 pm
- Location: Gloucester
I understand your concerns about calibration but today I have taken both a KPH & MPH Speedo apart and the only difference I can see is a part number on a chip on the circuit board.
All other chips etc have the same colours and numbers on.
So I have assumed the 2 chips are for reading the signal sent from the speed sensor on the gearbox and one converts to KPH and the other to MPH.
I know the mile odometer/trip is right as I work 14 miles from home and this reads perfect.
All other chips etc have the same colours and numbers on.
So I have assumed the 2 chips are for reading the signal sent from the speed sensor on the gearbox and one converts to KPH and the other to MPH.
I know the mile odometer/trip is right as I work 14 miles from home and this reads perfect.
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- Bongolier
- Posts: 396
- Joined: Tue Jan 30, 2007 8:22 pm
- Location: bradford, west ridings of yorkshire
also don`t put the complete unit on from the mx6 in
nowt works apart from the indicators for a few seconds then ends up blowing the hazard light fuse
oh what fun
well i had to know
just tried another speedo today yep spot on
you can just tell they are running right
take it easy folks
nowt works apart from the indicators for a few seconds then ends up blowing the hazard light fuse
oh what fun
well i had to know
just tried another speedo today yep spot on
you can just tell they are running right
take it easy folks
ECKY THUMP
the one true art form
the one true art form
Hi,
Just wanted to say this is a great tip. Just fitted one from a 626 after checking that the code on the Speedo face is GA5R and removed my chip.
Works spot on just a bit of difficultly resetting the mileage but you just have to brave and I used a small screwdriver to turn them back.
A big thank you to Maxheadroom.
By the way I have found a very good website for finding used parts;
http://www.247spares.co.uk
Just input the vehicle details and the part you are looking for and the response is very quick.
Example, I was looking for the 626/mx6 Speedo, input my details and within 10 minutes I had 5 replies with prices inc. P & P.
There was a large range on prices so do not jump on the first reply.
Hope some of you may find this of use.
Just wanted to say this is a great tip. Just fitted one from a 626 after checking that the code on the Speedo face is GA5R and removed my chip.
Works spot on just a bit of difficultly resetting the mileage but you just have to brave and I used a small screwdriver to turn them back.

A big thank you to Maxheadroom.
By the way I have found a very good website for finding used parts;
http://www.247spares.co.uk
Just input the vehicle details and the part you are looking for and the response is very quick.
Example, I was looking for the 626/mx6 Speedo, input my details and within 10 minutes I had 5 replies with prices inc. P & P.
There was a large range on prices so do not jump on the first reply.
Hope some of you may find this of use.