Speedo not reading

[Zacory]

Recently i have converted my back lights of my instrument cluster from the white lights to LEDs. this being the case i needed to take the cluster out. when i put it back in everything was reading (except for speedo) i have found that it isn't the instrument cluster because i got another one off a mate and that didn't read either. i have checked all my fuses and made my instrument cluster back to stock again.. neither of these worked :/ can someone please help

 

[aussie4life]

make sure that all your plugs (2 blue and an orange from memory) are seated correctly, eg, the tab on the left hand side of the plug. this could be a simple problem

 

[Zacory]

i have done that.. my mate reckons the LEDs are sucking too much juice but i thouyght they use less power

 

[aussie4life]

Backlighting has its own circuitry and wiring. cant be that

 

[Zacory]

ok i have everything working again except for odometer and speedo. it runs like a dream but im worried im gonna get pulled over for speeding and being only on my Ps it will be an instant loss of licence i have put plugs in properly and still nothing i sat on the ground and did it from the back and same results

 

[aussie4life]

did you undo the nuts on the back at all? ive had some intermittent trouble with my taco recently. also check the plastic on the back of the cluster, more so the copper tracks. they can break or snap with age

 

[Still_On_P's]

i have the exact same problem with my vn series 1. no speedo, changed the cluster, still no speedo...however every so often it will jump up to the speed im doing and work for 5 mins or so, then if i hit a certain bump in the road, it drops again. only happens every so often and not everytime there is a bump. help?

 

[aussie4life]

Just realised you said speedo and odo. Check your vss or vehical speed sensor. Its located on the rear neck of your trans between the main trans housing and your tailshaft. This is a common fault if both odo and speedo stop

 

[Still_On_P's]

can you check that by urself?

 

[Still_On_P's]

and how do you rectify the problem?