MerlinsMopars
Well-Known Member
- Joined
- Dec 16, 2019
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Approaching the end of the rebuilding aspect and looking for some help with the msd 6al2 upgrade. The issue is with the tach and 8920 adapter upgrade.
Firewall slot # 20 has a grey wire on the inside and white wire outside of the firewall. I am assuming it is the tach trigger which went to the - side of the coil originally. Is this a fact?
According to the msd diagram, I need to know if it is a current triggered, or voltage triggered tach.
So many different posts for different years and alike cars which is making it hard to dicifer what is correct.
Been thru many posts but I want to be sure.
Final countdown till break-in.
Disinformation is as bad so I need help.
Is this correct, and the tach wire from the firewall correct?
Thx for any help.
Firewall slot # 20 has a grey wire on the inside and white wire outside of the firewall. I am assuming it is the tach trigger which went to the - side of the coil originally. Is this a fact?
According to the msd diagram, I need to know if it is a current triggered, or voltage triggered tach.
So many different posts for different years and alike cars which is making it hard to dicifer what is correct.
Been thru many posts but I want to be sure.
Final countdown till break-in.
Disinformation is as bad so I need help.
Is this correct, and the tach wire from the firewall correct?
Thx for any help.