harlan shift light rocks

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Mar 23, 2010 | 12:37 AM

93TAJ.C.

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harlan shift light rocks

I just got my harlan shift light, its awsome and matches the pontiac red very close. I looked up a few places and everyone says to go to the coil or the pcm for the tach signal. I couldent believe what i was reading. I thought why not go straight to the tach wire for the stock tach? I did just that and it workes fine

Mar 23, 2010 | 02:04 AM

ssbowtie1

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Quote:

Originally Posted by 93TAJ.C.

Pic of the tach wire you're referring to?

Mar 23, 2010 | 10:33 AM

camar0corey

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I had heard the factory tach always reads high. I know there is a 150-300 rpm difference between my factory tach and my autometer. I have the autometer wired into the coil signal. Beats me?

Mar 23, 2010 | 11:58 AM

Rob

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Didn't know Harlan still made them. I think I have version 1.0 and it doesn't work anymore. What's his web site?

Mar 23, 2010 | 01:20 PM

93TAJ.C.

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Quote:

Originally Posted by ssbowtie1

Pic of the tach wire you're referring to?

I dont have a pic, but when you get the guage cluster out it's the only white wire in the loom, so its very easy.

Mar 23, 2010 | 01:23 PM

93TAJ.C.

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Quote:

Originally Posted by camar0corey

I had heard the factory tach always reads high. I know there is a 150-300 rpm difference between my factory tach and my autometer. I have the autometer wired into the coil signal. Beats me?

The factory tach does read about 200 rmp high. My shift light is set at 5500 and the tach says its at 5700. my computer limits at 6000 though, and the tach is right at 6000 when it hits the limiter.