Originally Posted by K12smitty
Do I really need to replace it with the 4 relay harness?
did you have any issues with this harness when it was installed on your bike?
Steve when I first read that you had installed "hundreds" of trailer hitches
I immediately assumed you were full of s.... and that was an exaggeration,
now that you've clarified that by telling us you worked for a hitch company
that sounds a lot more 'believable"
so I'll start by apologizing for the "sarcastic tone" of my original reply,
Like John explained (better than I could have) the wiring of the LT is very thin like 18 or 20 gauge,
it's not going to take much to have a problem with it.
I tried several 5 into 4 wire converters without success
and became convinced that you need a separate brake light on your trailer for it to work with the LT,
wiring that up with LED's is a great idea,
I've used the Dauntless 4 relay isolator system on both of my LT's and that's what I would use again,
there's probably quite a few out there with a single relay system
and probably a few without any relays that haven't had any problems
and may not ever have a problem.
It's not worth the risk "to me" I am the only one that works on my motorcycles
and I'm going to do it once and do it right.