Lotus Esprit Power Window Boosters



Tired of slow or non functional power windows in your Esprit? These window boost effectively turbocharge your window motors. Unfortuantely part of add lightness meant, no power window relays. All the electric load goes through the switches and as they wear out the windows get slower and slower.


When you push one of your electric window switch(es) all the power from the car battery goes thru the electric window switch and then on to the electric window motor(s).  Any degradation of the contacts in the electric window switch(es) results in the electric window motors receiving less than 100% of the battery power.  As the electric window switches in your Esprit age they wear and lose their ability to pass power on to the electric window motors.  Once these Electric Window Helper Modules are installed, all the power sent to the electric window motor is now sent thru these units.  Your electric window switches now control the window accelerator units.  Even the most worn and degraded electric window switches will still work and control these units. Also because these units ground to the door, so the current does not have to pass all the way through the body wiring to another ground location.


These install in each door. Installation takes under 20 minutes each. 


Typical install:


Window Booster wire colors

Red - power (I used the original power wire going to the window switch inside the door) (I will update with color ASAP)

Black - ground, attach to one of the 6mm studs above the power window motor

Green with yellow stripe - cut one power windo motor wire, connect the motor side of cut wire to green/yellow

Green - attach to switch side of the wire you just cut.

Yellow with green stripe - cut the other power window wire and atach this wire to the motor side

Yellow - attach to the switch side of the wire you just cut


Don't forget to check the track alignment and grease them while you have the door panel off.


If you want the windows even faster you can run a dedicated FUSED power wire from the battery, fuse box, or accessory post in the front trunk to each booster. 


These are sold in pairs, so quantity one is enough to do one Esprit.


Price: $119.00

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