Installing tach, quick wiring questions

91LX_5L

Founding Member

May 13, 2002

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May 5, 2005

#1

• May 5, 2005

• #1

I got my manual its a autometer lunar.

Anyways it says to hook up the green wire to the COIL or ELECTRONIC IGNITION. Dont wanna sound like a dumbass but where do I hook this up? Pics would help but dont worry if u dont have one.

Also it says to hook up the RED to the ignition switch, where can I find this?

Last but not least

White to 12V dash lighting wheres the easiest source for this?

It also says to hook up the negative to a good ground, shows a pic of the battery - that is not nesscary is it? Couldnt I just find a nice spot of metal behind my dash somewhere, scrape off the paint and ground it there?

THANKS!!

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

34

129

May 5, 2005

#2

• May 5, 2005

• #2

if you have a stock ignition, the tach wire can go to the neg side of the coil.

for 12 volts, you can pretty much source any key-on 12 volt source that is close to your guage. i do grounds the same way. i find a nice clean one (ohm it out to be sure - tachs are finicky) and use it.

for the dimmer, you can grab the dimmer wire at the back of the headlight switch or tap into a wire that dims (at the radio, HVAC, dash clock, ashtray light, etc).

good luck.

 

Q

qwick94GT

New Member

Nov 20, 2004

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May 5, 2005

#3

• May 5, 2005

• #3

Splice it into the negitive coil wire. Right were it plugs up. Thats what I did.

 

91LX_5L

Founding Member

May 13, 2002

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May 5, 2005

#4

• May 5, 2005

• #4

ok well I guess ill use my cd deck for 12V, and use my AC contols etc for the dimmer. For ground should I tap into my cd deck ground or just make a new fresh one? Either way doesnt bother me.

What do you mean ohm out the ground?

Where is my coil located? I never knew it had a + and a - I thought my plug wire just pluged right on to it...im confuised now? Ignition coil? or what coil? Anyone got a pic of this?

 

B

Black70Fastback

New Member

Dec 14, 2003

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Dyer, IN

May 5, 2005

#5

• May 5, 2005

• #5

well it would be the part that your main "plug" wire goes to from the dist. but right next the heavy spark wire, is a lighter pair of wires coming from the engine harness. ones marked + the -, i dont remember if you have to unplug it to see which is which.

 

91LX_5L

Founding Member

May 13, 2002

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May 5, 2005

#6

• May 5, 2005

• #6

ahhh ok there is a little harness on the back wich looks like it feeds into a resistor or somthing like that...that must be the one?

 

91LX_5L

Founding Member

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May 12, 2005

#7

• May 12, 2005

• #7

anyone?