Help With Radiator Fan/tacho Wiring

[andrushenko]

ok first

my tacho i just bought, i need help finding the 12v dash lighing so when i turn my parkers on the lights in my tacho turn on.

tacho works, kinda flickery and doesnt seem to be revving as high as it should...at i''ve got

 

red wire> positive battery terminal

black wire> earth

green wire> negative coil

white wire> meant to go to 12v dash so it illuminates.

 

atm, my car only revs to 5000 at the most, kinda wierd

is this wiring right? or should i move the red from the battery to the positive coil?

 

also, my radiation fan doesnt work.

i've got the red wire to battery but the green wire is cut?

 

i think this goes to a temp sensor? where is this?

 

cheers

[jono1986]

How much did you pay for the tacho, cause mine was 40 bucks and it's accuracy is +/- 100 revs. thought of adding a capacitor or a resistor in to smooth the signal out but haven't tried yet.

[andrushenko]

How much did you pay for the tacho, cause mine was 40 bucks and it's accuracy is +/- 100 revs. thought of adding a capacitor or a resistor in to smooth the signal out but haven't tried yet.

 

ohh it was just a cheapy

let me know how you go with that

[aaronsae71]

Check on your tacho because they have a switch on the back with 4-6-8 as this is for the amount of cylinders so make sure the switch is on 4 and you can wire the white wire to ignitoin power so when you turn the ignition on the light will light up and the red wire should also go to ignition power also so if you have a cd player run it to the red wire on the cd player wiring or if not go and buy a test light and find ignition power.

[idw]

sounds like yours is switched to 6 cyl or its only for 6 cyl cars. and a 12v 100uf capacitor should smooth out the movment but just wire in a diod in line to the capacitor on the positive to be abit safer