Install Tach HELP please!

[haggardrat]

I just picked up an old VDO tach from a junkyard. Ive searched the internet looking for instructions to wiring it up and I cant seem to find any. Its got a +, -, and a 1 for hook ups in the back. Ive got no idea what goes where could you help me out please

[mrvwaccessory]

+ is for power coming from the ignition switch 9make sure it's wired to on/off switch), - is for ground, and 1 is for coil following where the distributor wire is connected to, I think it's 1 (-). Hope this helps!

Sal
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1965 EZ Camper (show)
1967 Westfalia Utility Trailer
1998 Bayliner Ciera 2858 Boat

[J S Porter]

My VDO Tach has the following Contact, Neg,Pos and a green post Marked Zunduag. Any one know how this is wired.