Tach wire orientation question

[1975 Kombi]

I'm testing a tach and would like to know the wire orientation. (+12) (1) (-) So +12 goes to the 12volt supply, 1 goes to the same side as the points lead on the coil and - goes to ground. Does that all seem correct.

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Brett

“He’s decieving you boy! Reach into his pocket and take what he’s got.” Mr. Crabbs.

75 Westy auto
03 Jetta TDI
71 SB
74 Westy
Licensed pilot (single engine land VFR)
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Rust In Pieces: 72 Bug, 73 Bug, 81 Rabbit LS D 2D, 83 Rabbit D 2D, 84 Jetta TD GL, 85 Jetta D, 68 Z28 RS 302, 91 Passat 16v

[Danwvw]

Exactly! I would try to pick up the wire to the coil where ever it is up front as it is switched through the ignition for the +12 (On a VW it's the bottom of the 1st 2 fuses)(Looks like it also on the first 2 fuses on the Porsche's). The 1 wire is the signal and they are calling it 1 because the coil is marked 1 where it goes. - would have to be ground. http://www.pelicanparts.com/911/911_parts/Electrical/911_electrical_1965.jpg
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1960 Beetle And 1679cc DP W-100 & Dual Zeniths!