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Old June 10th, 2010, 10:39 AM   #1
SULLY313
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94 K1500 5.7 Tach signal?

I'm trying to hook up a aftermarket tach that was installed in a truck I just purchased. The wire they tapped into for a tach signal is actually 12v swtiched power.
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Old June 10th, 2010, 01:24 PM   #2
Kodiak450r
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look at the ignition coil behind the air cleaner. you will see 2 plugs on top of it aside from the actual coil wire. one plug is black and connects to the distributor with a red and white wire. the other plug is gray and has a white and a red wire. hook your tach signal to the white wire on the gray plug.
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Old June 10th, 2010, 02:32 PM   #3
jbsjunk
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Quote:
Originally Posted by Kodiak450r View Post
look at the ignition coil behind the air cleaner. you will see 2 plugs on top of it aside from the actual coil wire. one plug is black and connects to the distributor with a red and white wire. the other plug is gray and has a white and a red wire. hook your tach signal to the white wire on the gray plug.
+1 There might also be a single wire pigtail on the firewall by the dist that you can hook the tach too. Would be a male spade connector.
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Old June 10th, 2010, 03:42 PM   #4
SULLY313
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got it guys! Thanks!
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