Drop resistor Mod for Auto Maximas
This mod forces the transmission to shift at FULL Line Pressure at all
times the switch is on.
A WOT (Wide Open Throttle) switch is best suited for this purpose
because the part throttle shifts are extremely harsh and could damage the
transmission.
Ok here is where the drop resistor is located. Front side of the
drivers side strut tower.
There is a connector with two wires attached to the resistor. The
electrical drawing of the drop resistor looks like this. You must cut one
of the wires, doesn't matter which one but cut it at least 2 or 3 inches
from the connector so you have room to strip and connect to it.
Strip a small section on either end of the wire you just cut and attach a
wire to each end by soldering or use a connector. Run the two wires to a
switch. Either a WOT micro switch (preferably) as per the picture or a
manual switch.
I have a small L bracket I made that attaches it to the intake manifold
bolt closest to the throttle body.
Keep adjusting the switch position until the throttle hits it just before
or when it hits the WOT position. It is imperative that this switch be a
Normally Closed (NC) switch so the circuit is always made until you hit
WOT at which point it opens and effectively disconnects the drop resistor
from the circuit.
You can do the same thing by running the two wires to the cabin and
hooking to manual switch (5 amp rating or higher) but I much prefer the
WOT switch because you never have to worry about turning it on or off. You
have enough to think about when racing without another stupid switch to
turn on and off.
The micro switch I use is rated at 10 amps and I got it from an applicance
shop where it is used in a microwave.
Most switches of this type are Normally Open (NO) and this will NOT work.
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