1991 Mazda B2600 Tachometer Hookup

MAZDA TRUCK
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SCOTTYJ
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I have a 1991 mazda b2600I 4x4 truck with manual shift. I would like to install a tachometer. In the instructions it says to hook a green wire from the tach to the negative side of the ignition coil or appropriate signal source. I see 4 wires coming out of the distributor (not spark plug wires) and i beleive two from the coil and another that just terminates with a plastic plug on the end. can you tell me which is the proper location and wire to connect the tach to. I am ok with the other wires on the tach but do not know where to hook it to the coil or the distributor.
thanks for any help
Mar 25, 2007 at 12:17 PM
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RASMATAZ
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Put green wire to the negative terminal of the coil which will be marked on the coil and it will be the smaller wire. The other wires are to ground the rest is for your tach light.
Mar 27, 2007 at 3:09 PM
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HELLCAT18
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Another thing you could do is find a dash board out of the same year truck(does not have to be the same model) and switch the gauge clusters. My '86(they didn't do much changing over the years)had a bone stock gauge cluster but I swapped it for one out of a 2200 with the tac and it works.
Mar 29, 2007 at 10:55 PM

Suggested Repair

Connect the tachometer green signal wire to the negative terminal of the ignition coil. That terminal is marked on the coil and uses the smaller wire; the remaining tach wires are for ground and the tach light. Alternatively, install a same-year Mazda truck gauge cluster that already includes a tachometer.

Conversation Summary

The owner of a 1991 Mazda B2600i asked where to connect an aftermarket tachometer signal wire among the distributor and coil wires. The expert advised connecting the green wire to the coil negative terminal, identified as the smaller marked wire, with the other wires used for ground and the tach light. Another reply suggested swapping in a same-year gauge cluster that already has a tach.

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