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Page 18 of 22
Catalog #70403
Brochure No. 63-0147
©2003 Edelbrock Corporation
Rev. 1/03
3.7 Microswitch Installation and Wiring (Continued)
The bolts used to attach the microswitch have extra length to allow for spacing the microswitch away from the
bracket if necessary. After determining the position of the microswitch, we recommend trimming the bolts for a
clean installation.
Due to the wide variety of throttle linkage combinations in use, it is impossible to supply a microswitch bracket
custom-tailored to each application. The universal bracket-supplied will need to be modified to fit your specific
application.
Here is the microswitch assembly mounted on our
Ford F-150 Lightning. We utilized an existing hole
bolt on the intake manifold. It is an example of one
of many ways in which to mount a microswitch on
your manifold. The microswitch bracket allows for
many different mounting positions. The microswitch
bracket can be modified to clear almost any
potential interference around the throttle linkage.
Please look for potential microswitch mounting locations and adapt your microswitch bracket according to the
needs of your particular application.
The microswitch bracket is drilled to allow many different switch mounting positions. This flexibility allows the
microswitch to be positioned in such a manner that it will engage the throttle linkage without interfering with its
normal and safe operation. The bracket may be manipulated (bent, twisted, and/or cut) to best suit your
combination. Mount the microswitch so the actuation arm is triggered by throttle linkage making sure all wiring
and the bracket do not interfere with the smooth and safe operation of the throttle linkage.
Adjust microswitch to ensure the actuation arm "clicks" at the same point your throttle linkage reaches wide open
throttle against the throttle stop. At no time should the microswitch be enabled before wide open throttle.
3.8 Final Electrical installation Recommendations
At this time, it is advised that you double-check the following areas:
1. Double-check all wires so that they do not come in contact with any heat sources such as exhaust manifolds,
or EGR crossovers.
2. Double-check the wires that lead from the microswitch to ensure they do not interfere with the operation of
the throttle linkage.
3. Make sure the relay and the fuse are serviceable and mounted securely.
You are ready to hook up your battery and prepare your vehicle to run.