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more tach/cluster help 200 1983

Hey man
I'm in the middle of doing the exact same thing in my '83. Helps me to know that you also have a gray wire. I've had many posts about this earlier this month, if you can find them with the search. Basically i haven't got mine to work yet, but i did this whole conversion to my dads '90 240 in about 20 minutes last night.

The tach gets everything it needs from the board when you mount it, except the signal, which i now believe is the gray wire. In my car though, this gray wire now goes nowhere. Check on your coil to see what wires are on there, there should be one that matches this gray wire on the negative terminal of the coil. If not, run a new one down there. (that's what i'm doing tonight). But basically, just one wire goes onto the little spade connector at the bottom of the tach.

I'm not sure about the other wires on the cluster, i'll take a look tonight at mine and post back.
Good luck!






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