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Once upon a time, there was a motorcycle
that wanted to tow a trailer. The motorcycle was older and quite
beautiful, but alas, was not very smart (it did not have any computers or
sophisticated electronics on board). The motorcycle and the trailer shared
the bike's wiring for their lights, and they lived happily ever after.
What's the moral of this story? Modern
motorcycles do have computers and sophisticated
electronics. Also, in an effort to improve mileage, reduce weight and
costs, manufacturers are using the smallest gauge of wire that will support the
motorcycles lights only. The act of simply tapping
extra lights on your bike
can cause damage; blow fuses, burn out relays, or worse. But never fear, EC
is here!
Our trailer relay
isolation packages easily and properly connect and isolate your trailers
electrical load from the motorcycles factory wiring, fuses, relays and computers
and electronics. These units use Omron micro-relays in an epoxy potted housing
for weather resistance.
Main power and ground come from the battery. .
In order to make a
complete harness kit, you must order the 07660 Relay Package and one sub-harness
listed below;
GL1500 - p/n 07661
GL1800 - p/n 07662
Universal - p/n 07663
97+ Harley Davidson - p/n 07667
If your trailer is a 4
wire setup (has combined brake and turn signals), you will need to order the 07664
converter. How do you tell if you need it? Look at
the wiring plug on your trailer - does it only have 4 wires? It's
about a 98% guess that you will need the converter. And unlike a
tonsillectomy, going to a 4 wire setup is completely
reversible by simply unplugging the module to revert to a 5 wire system. Install
is "Plug & Play". Since adding the converter only utilizes 3
of the 4 relays in the housing, the wiring is designed to allow you to power
any accessory up to 10 amps max with a 4th relay and a switch (not
included). Please
note the 07664 has been redesigned and will now work with LED lights (your lighting MUST BE
electrically grounded only and not grounded to the frame). Please call with
any questions.

Fitment:
Universal, Plug & Play for GL1500 (all), GL1800 (all), 97+ Harley

County
of Origin:
isolator ,
Plug & Play Harness; ,
converter 

Components:
and 

Product Support:
Installation Instructions >07660 (pdf) >07664 (pdf)
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