Ok, I finished the install of my Harlan Window Switch tonight. Not very difficult at all. A few things I found out about our cars and these switches:
1. It is pin 54 on the PCM for the tach output signal. Of the two "banks" of pins, one on bottom and one closer to the firewall, it is on the one closer to the firewall. #54, a white wire.
2. I figured that since the MSD switch had to be modified to 2 cylinder mode, this one would eb set to 2 cyl also...NOT TRUE. Set it to the normal 6 cylinder mode for the proper operation.
I am sure I will think of a few more useful tidbits of info for everyone later, I'll post as I remember. Feel free to ask any questions about the install or the switch itself. Matt Harlan was VERY helpful in getting the switch shipped in a timely manner (under a week), and the instructions that come with the switch are very detailed.
1. It is pin 54 on the PCM for the tach output signal. Of the two "banks" of pins, one on bottom and one closer to the firewall, it is on the one closer to the firewall. #54, a white wire.
2. I figured that since the MSD switch had to be modified to 2 cylinder mode, this one would eb set to 2 cyl also...NOT TRUE. Set it to the normal 6 cylinder mode for the proper operation.
I am sure I will think of a few more useful tidbits of info for everyone later, I'll post as I remember. Feel free to ask any questions about the install or the switch itself. Matt Harlan was VERY helpful in getting the switch shipped in a timely manner (under a week), and the instructions that come with the switch are very detailed.
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