Hooking Tacho Up!!! Help Me!!!

[SiLeNt-SoN]

Hey

just got my tacho, was wondering how to hook it up, it is a 1984 commy executive, i nned to things like where i wire it up to? and what wires?

any ideas and help welcome lol

Thanks!!!

[ENV5]

red = positive
black = negative
green = negitive coil
white = parker wire

[SiLeNt-SoN]

Hey,

thats about what i needed to know, but were are these wires placed? in a black coil of wires under the hood? or like under the steering wheel? or in the dash somewhere?????

and things like, red=positive, but what colour is the positive wire?

im hopeless at this! lol

thanks

[ENV5]

lol just run the red wire to the positive battery terminal
run the black wire to a bit of metal under the dash
with the green wire run it to the coil you will see a little - mark on one of the 2 terminals
now your parker wire is usually a dark purple or violet colour best bet would be to get a test light and try and find it under your dash if you think you found it turn the parkers on and off and if your test light goes on and off you know thats the one but best place to look for it would be in the light switch wire loom

[DANNY8]

now your parker wire is usually a dark purple or violet colour best bet would be to get a test light and try and find it under your dash if you think you found it turn the parkers on and off and if your test light goes on and off you know thats the one but best place to look for it would be in the light switch wire loom

lol I never thought of that, for mine I just ran the wire straight to the coil.....will remember next time.

[atrail308]

you're better off hooking the power wire (red) to accesories, ie. cigar lighter, clock, stereo, etc... As for the light, an idea would also be cigar lighter, clock as it then the brightness of the tacho light can also be adjusted/dimmed...

[Goon]

This is just a tip#

When using the 12v accessory in the fuse box, make sure your key isnt tunred to far fwd, i've noticed with mine being 1/2mm to far fwd wont activate the 12v access.

So if you think your connects have an outstanding stable hold, and nothing isn't happening.. just make sure your key isnt that extra bit fwd.

[SiLeNt-SoN]

i have:

red wire - Battery
Black wire - earthed
green wire - coil
white wire - lights

now i have hooked these up this way, but it is not working?

any ideas welcome please!

thanks

[VKStevo]

hey mate...similar problem, same person 2 help out, good on ya ENV5

what part isnt working? the lights or the tacho itself? or everything?

[atrail308]

did you connect the green wire to the negative terminal on the coil???

[SiLeNt-SoN]

nothin is working?

im sure the tacho is not fualty so i cannot think of and explanation??

thought the earth may not be trusty but it is...!

and yes i tried to connect to positive and negitive terminal, nothin helps?

[VKStevo]

do u have the right positive?

[atrail308]

are you positive its right, im sure its a negative...

[SiLeNt-SoN]

what do you mean?

i have the positive red wire to the battery for main power
and the negative green wire to the coil?

what u mean?

[VKStevo]

just checking that it is connected to the battery, the only other thing i could think of would be the earth, do u have a multimeter or a voltmeter? if so you could check everything 2 make sure there is power where it is supposed 2 be, so then if it still doesnt work u can blame the tacho itself and take it back

when i wired mine up, the light didnt work at all, but i eventually got the tacho itself to work, i had the green on the positive of the coil, was told that was wrong so changed it and it worked, the light has just decided 2 work about 2 weeks ago (tacho was installed a couple of months ago) and has worked ever since

[atrail308]

yeah, if the light doesnt turn on and the needle doesnt move, it does sound like your earth... check where you have the black wire going to, if in doubt, use a test light or multi meter to see if you have ground there...

[SiLeNt-SoN]

hey

tested the tacho in another car and it worked fine, then put it in mine and no go!

im guessing its the earth, well more hoping its the earth lol.....

will have another go at it tomory........

the only thing i have not really tried is the earth, so fingers crossed!

[Goon]

Do you have chrome stips around your windows? if yes .. then try an earth on one of those screws that holds them in, thats what i have mine on atm.

If you still have no luck try a 12v in the fuse box rather then the battery.

ps, best connection is solderniod or the butt connection things, followed by tape.

[VKStevo]

if u have a voltmeter or test light, put that across ur black and red wire coming from the car, it should light up, if not u have a problem with 1 of them

[HoldenMad]

find an earth that u know works on another item in the car and hook up to there or close to it. If the surface is painted u won't get a good earth, so make sure u earth it somewhere that's not painted or thick metal and a good screw.

Hope this helps.

[SiLeNt-SoN]

yeah,

YES finally, it hooked up correctly lol... i earthed it to the metal strip on the car and it worked great...!

all looks good, thanks people..

[VKStevo]

glad u got it working

where did u have it earthed before?

[SiLeNt-SoN]

i had it under the dash, just a metal bar thought it may of been a good place lol

turned out i was wrong...!

anyone got some pics of thier tachos?

[VKStevo]

this is mine

tiny but does the job

[V-ahhh]

thats a good size i reckon, were u get it from?