tach not working
Posted: May 26th, 2006, 9:55 am
I finished the hei mod about a month ago, and I cant seen to get my tahc working, I tried the 1000 ohm fuse, and even directly hooking it up.
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Posted: May 26th, 2006, 10:35 am
You do have the resistor inline and attached the wire beside it correct?
Posted: May 26th, 2006, 10:38 am
Does the tahc get its signal form the distributor?, or frm the external coil.
Posted: May 26th, 2006, 12:06 pm
There is no such thing as a 1000 ohm fuse. Fuses restrict current (amps) and should have no resistance, unless blown when they should indicate infinity.
The tach signal is from the YELLOW / BLUE wire from the dizzy.
The tach signal is from the YELLOW / BLUE wire from the dizzy.
Posted: May 26th, 2006, 12:29 pm
If you have an external coil -
The 1000 ohm resistor goes between the negative terminal of the external coil to the yellow/blue wire on the 3-wire connector(disty) and the 3 wire connector should not be plugged into the disty.
Also if you havent gutted the disty - it is recommended to cut the orange wire and the wire next to it in the 5-wire connector.
The 1000 ohm resistor goes between the negative terminal of the external coil to the yellow/blue wire on the 3-wire connector(disty) and the 3 wire connector should not be plugged into the disty.
Also if you havent gutted the disty - it is recommended to cut the orange wire and the wire next to it in the 5-wire connector.
Posted: May 26th, 2006, 12:44 pm
Ok, thanks guys , resistor is what I meant to say, and I had it on the positve of the coil.
Posted: May 26th, 2006, 1:11 pm
or use a ze disty. Its all external pretty much all wahts in it aside from the Rotor Is the camshaft sesnor. I am running the HEI with external coil and my tach stopped working recently. I'm pretty sure the resistor has blown or lose connection. Its all fine. I can still drive the car hard I knopw which speed each gear ends at pretty much. I might look at it later on today and see what teh prob isariesdude wrote:If you have an external coil -
The 1000 ohm resistor goes between the negative terminal of the external coil to the yellow/blue wire on the 3-wire connector(disty) and the 3 wire connector should not be plugged into the disty.
Also if you havent gutted the disty - it is recommended to cut the orange wire and the wire next to it in the 5-wire connector.
John
Posted: July 5th, 2007, 5:05 pm
I used a 1/2 watt resistor, is that right or do I need a 1watt 1k resistor?
Posted: July 5th, 2007, 5:12 pm
Chertel... you do realize this thread is over a year old right? 
Tunes67
Tunes67
Posted: July 5th, 2007, 5:25 pm
I know I was just doing a search and thoutht Id ask on this thread rather than starting a new one.
Posted: July 5th, 2007, 5:26 pm
No big deal.. just some folks dig up old threads not realizing it. 
Tunes67
Tunes67
Posted: July 5th, 2007, 7:13 pm
the correct resistor is a 1000ohm resistor avilable in a bulk pack from radoshack. or also know as a 1k ohm which 1k = 1000ohm