shifnoid hook up

Any way to hook up a shifnoid to a shift light or a 6a msd box without a rpm activated switch?

Good question...if you have a tach with a shift light, you could cut into the wires from the tach that go to the light, install a relay...yes it would work.

I think on a shifnoid you have to switch them to neg. to make them work.

BIGDOG466 wrote:I think on a shifnoid you have to switch them to neg. to make them work.

Hey get back to work...

Even if you had to switch the negative, you could use a relay wired normally closed, and use the signal from the tach to open the relay...I believe it could be made to work.

You get back to work! I'm working on the race car.
Yea it will still work just got to be hooked up different

Those shift noids are tricky to hook up, be damn sure to use the neutral safety switch that comes with the unit, if you don't when you rev it to your shift point it will shift, even in park, or neutral, I had a very bad experience with one.

Treeyasoon wrote:Good question...if you have a tach with a shift light, you could cut into the wires from the tach that go to the light, install a relay...yes it would work.

Thats the way mine is hook up ....works great

I am lost on how to hook up the shifnoid to shift light, I have a red,green & black wire going to shift light. The red wire has power as soon as ignition is turned on & stays constant with ignition on, the black wire is a constant ground & the green wire is tach signal so what wires do I hook up to the relay & what terminals. The terminals on the relay are 85,86,87,87a & 30. The shift light has a pill holder built into it, any help would be greatly appreciated.

You won't be able to do it with this type of tach/shift lite combo. You would need to have a tach that has a "push to set" button on it that sets what rpm the light comes on at...it has only 2 wires running from the tach to the light. Sorry, that is what I had in my mind when I made my earlier post.
The type you have...the light gets it's singnal to fire internally, from the chip. There would not be anything to tap into.
Either an rpm switch or a delay box will work, if you run one.
Jeff

The tach is a 3904 autometer monster tach & it does have a shift point adjustment.it also has a two wire plug coming out of the bottom of it that is not connected to anything, I believe the two wire connector is for a shift light.

get an rpm switch...or an output from a timer on a delay box works awesome, thats how mine is.

mustangjeff wrote:I am lost on how to hook up the shifnoid to shift light, I have a red,green & black wire going to shift light. The red wire has power as soon as ignition is turned on & stays constant with ignition on, the black wire is a constant ground & the green wire is tach signal so what wires do I hook up to the relay & what terminals. The terminals on the relay are 85,86,87,87a & 30. The shift light has a pill holder built into it, any help would be greatly appreciated.

Try hooking it up like this...I'm fairly certain it will work. Use the 2-wire plug (that isn't connected) and connect them to #85 and #86. (Coil)

Thanks for the help treeyasoon, that worked good.

mustangjeff wrote:Thanks for the help treeyasoon, that worked good.

It was easier to draw a picture than to try to explain it...lol.