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[skreminegul07]

Thirty amp fuse? for what, that pretty hefty.  The maxi fuse for most of the bike is 40AMP.   My electric stove has 30 amps.

[VAZHOG]

Thirty amp fuse? for what, that pretty hefty.  The maxi fuse for most of the bike is 40AMP.   My electric stove has 30 amps.

It's a Blade Fuse with a 30 on it-- DC is Direct Current -Short it (water) and it will blow the battery without the fuse, Under your seat that might be bad--Hence the fuse is ment to open.

[Chief]

It's a Blade Fuse with a 30 on it-- DC is Direct Current -Short it (water) and it will blow the battery without the fuse, Under your seat that might be bad--Hence the fuse is ment to open.

I think what he was questioning was the high amperage rating of the fuse. 30A @12v is 360 watts. That's a whole lot of power going to the trailer. Now, if you're hooking up a coffee pot in there or maybe a microwave I can understand it, but a 5A fuse (60 watts) should be more than enough to run the lights.

Wait a minute. You've got that compressor thingy in there don't you? That would explain the higher fuse rating.

For lights, 5A or 7.5A would be fine. Or use LEDs, hook into the taillight harness and forget the fuse altogether.

[Trapperdog]

Fuse? We don't need no stinkin fuse. My thinking is that the rear lighting harnessis already fused so I blew, no pun intended, off that wiring detail. Double fusing a circuit didn't seem necessary.

I went ahead with 10A fuses on the trailer harness figuring that they will blow before the 15A bike fuses. That may or may not be the case but for now I will keep them until I decide on an isolator or not.
I did find out that with everything stock, no trailer hook up or brake module, that every thing works fine on the bike other than the signal noise through the speakers. When adding the brake module to the equation, the speaker humming begins. With the module in place, unplugging the 2 indicator 2 pin Deutsch connectors under the tail lamp stops the humming ( and the rear signals). I am beginning to think I blew the module when the incorrectly wired  J & M part was initially connected .
BTW... is there a flasher 'relay' on the bike or is it intigrated in the brake relay in the fuse box? (I did switch that with an extra) Thanks, Roger

[Chief]

I went ahead with 10A fuses on the trailer harness figuring that they will blow before the 15A bike fuses. That may or may not be the case but for now I will keep them until I decide on an isolator or not.
I did find out that with everything stock, no trailer hook up or brake module, that every thing works fine on the bike other than the signal noise through the speakers. When adding the brake module to the equation, the speaker humming begins. With the module in place, unplugging the 2 indicator 2 pin Deutsch connectors under the tail lamp stops the humming ( and the rear signals). I am beginning to think I blew the module when the incorrectly wired  J & M part was initially connected .
BTW... is there a flasher 'relay' on the bike or is it intigrated in the brake relay in the fuse box? (I did switch that with an extra) Thanks, Roger

Roger,

Does the module still combine the run and brake into the turn signals? I'm curious what you mean by blew the module.

The module uses a small IC chip to do it's magic. I wonder if the input of the HW amp is really sensitive and 'hears' this in the harness. It sounds like you've identified what is causing it, now to figure out why.

Good luck.

[Trapperdog]

Roger,

Does the module still combine the run and brake into the turn signals? I'm curious what you mean by blew the module.

The module uses a small IC chip to do it's magic. I wonder if the input of the HW amp is really sensitive and 'hears' this in the harness. It sounds like you've identified what is causing it, now to figure out why.

Good luck.

Thanks Chief, Yes, the modal still works the brake/signal etc. but when it is plugged in (with out trailer harness) the signals blink very rapidly. Instead of "blew the modual" I should have said "injured the modual". As I stated above, with the modal plugged in, and the 2 rear signal Deutsch connectors unplugged, there is no humming. We did run the trailer 325 miles with the dog today (no modal) and everything seemed to work fine. Tomorrow I am going to switch modals with our 07 FLHX and see what happens.
Did you have an answer on the signal relay since you have been through your bike from top to bottom?
Did you get some more miles on her today or was everybody stopping you to admire the paint job! Roger

[Chief]

Thanks Chief, Yes, the modal still works the brake/signal etc. but when it is plugged in (with out trailer harness) the signals blink very rapidly. Instead of "blew the modual" I should have said "injured the modual". As I stated above, with the modal plugged in, and the 2 rear signal Deutsch connectors unplugged, there is no humming. We did run the trailer 325 miles with the dog today (no modal) and everything seemed to work fine. Tomorrow I am going to switch modals with our 07 FLHX and see what happens.
Did you have an answer on the signal relay since you have been through your bike from top to bottom?
Did you get some more miles on her today or was everybody stopping you to admire the paint job! Roger

Roger,

I'm not sure about the turn signals having a relay. Maybe someone else knows for sure. I only know of the brake relay and there is only one relay in the battery bay, so if I were to guess, I'd say there is no relay for the turn signals.

No miles on the bike yesterday. We were on the road all day. Today's plan is to ride but it's a good bit cooler than yesterday. I'll get out in a bit.

[Trapperdog]

Roger,

I'm not sure about the turn signals having a relay. Maybe someone else knows for sure. I only know of the brake relay and there is only one relay in the battery bay, so if I were to guess, I'd say there is no relay for the turn signals.

No miles on the bike yesterday. We were on the road all day. Today's plan is to ride but it's a good bit cooler than yesterday. I'll get out in a bit.


Yea, I was thinking something like the round flasher relays in all my trucks. I was just curious what makes the flashers work in the bikes.
I see it is supposed to be 59 in Marietta, GA., today and is 41 now. so turn on the heated parts and put on some miles! Roger

[vagabond6542]

Roger,

Here's a thought to ponder, is it possible that you may have created a ground loop in the "signal",i.e. radio, amp, or anything hi-tech, circuit?
You were introducing a new modual into an already balanced circuit. Some manufactors try to avoid this but all do not succeed.  The common node ground may become a circle ground if not careful.
Just my .02.

Vag/George

[Chief]

Yea, I was thinking something like the round flasher relays in all my trucks. I was just curious what makes the flashers work in the bikes.
I see it is supposed to be 59 in Marietta, GA., today and is 41 now. so turn on the heated parts and put on some miles! Roger

I just got back a bit ago. Got in about 275 miles scouting for this weekend. I wound up riding some gravel so the bike is a dusty mess now.

Everything worked great. Nothing fell off that I can tell.

[Trapperdog]

I just got back a bit ago. Got in about 275 miles scouting for this weekend. I wound up riding some gravel so the bike is a dusty mess now.

Everything worked great. Nothing fell off that I can tell.

Awsome! Must feel great to finnaly ger her out! I can't believe you took it on  gravel though.

[Trapperdog]

Roger,

Here's a thought to ponder, is it possible that you may have created a ground loop in the "signal",i.e. radio, amp, or anything hi-tech, circuit?
You were introducing a new modual into an already balanced circuit. Some manufactors try to avoid this but all do not succeed.  The common node ground may become a circle ground if not careful.
Just my .02.

Vag/George

George, Not entirely sure what you mean by a "ground circle". I know just enough about 12v wiring to be dangerous! I bolted the hawg wired amp ground to the frame neck during installation.
With the trailer wire harness ground, I wired into the rear brake circute ground wire (b/v wire I believe). When first installed, there was no ground to either the rear bike lights or the trailer(due to the faulty J & M 3 way harness), but somehow things worked, though incorrectly. I am curious about a ground circle though!  Thanks, roger

[Chief]

Awsome! Must feel great to finnaly ger her out! I can't believe you took it on  gravel though.

It wasn't my plan. The road I was on ended and I would get off of it in about .3 miles, so easy does it and I went. Turned out that the road I intersected with was gravel for about 1.5 miles tho. Can't do much damage at 10mph, but the back of the bike was really dusty.

[vagabond6542]

George, Not entirely sure what you mean by a "ground circle". I know just enough about 12v wiring to be dangerous! I bolted the hawg wired amp ground to the frame neck during installation.
With the trailer wire harness ground, I wired into the rear brake circute ground wire (b/v wire I believe). When first installed, there was no ground to either the rear bike lights or the trailer(due to the faulty J & M 3 way harness), but somehow things worked, though incorrectly. I am curious about a ground circle though!  Thanks, roger

When I worked in Instrumentation at KSC,Fl. And had to deal with full scale measurement being  5 mv,  the biggest problem was ground loops. A ground loop is when a circuit is grounded twice. This will create eddy currents on the ground.
In most circuit set-ups, it has its own common node ground for power only.
Then there is introduced a signal ground, your second ground. If a signal ground is grounded twice anywhere in the signal circuit before it is grounded at the common point,i.e. Battery negative post, you will have eddy currents. That is what I meant by circle ground.

George

[Trapperdog]

When I worked in Instrumentation at KSC,Fl. And had to deal with full scale measurement being  5 mv,  the biggest problem was ground loops. A ground loop is when a circuit is grounded twice. This will create eddy currents on the ground.
In most circuit set-ups, it has its own common node ground for power only.
Then there is introduced a signal ground, your second ground. If a signal ground is grounded twice anywhere in the signal circuit before it is grounded at the common point,i.e. Battery negative post, you will have eddy currents. That is what I meant by circle ground.

George

George, thank you, I had never heard of that before but it makes sense!