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post #1 of 12 Old Mar 29th, 2009, 9:33 pm Thread Starter
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Motolights Install Gone Wrong

After buying a set off of a board member two years ago, I finally got the balls to install of a set of motolights.

After stripping off the plastic yesterday, I got them bolted on and ran the harness, relay to my Bluesea fuse box. I installed a 25 amp fuse in the block. The fuse block has a 30 amp fuse that is attached to the rear heat seater as a switched power source. As per the diagram, I ran the + wire to the fuse box and I grounded the lights to the bike. When I turn the bike on, no lights?

I futzed with for an hour or so before I gave up. I even tried hooking the positive to the battery- no dice.

I'm thinking dead bulbs but both bulbs dead?

I was also thinking that the 30 amp inline fuse to the Bluesea may not be strong enough but I really have no clue what the hell I'm talking about.

Could the relay in the harness be bad? The harness also has a 20 amp fuse. I though 25 in the block would be good enough but obviously it wasn't.

Any ideas?

Rob V.B.
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post #2 of 12 Old Mar 29th, 2009, 10:00 pm
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Re: Motolights Install Gone Wrong

Rob..
Increasing the size of the fuse will only let out more smoke....

I don't have the Moto lights.. but someone here will pop in with an answer for you about the amperage.

The relay might be defective..
The bulbs may be burnt..
You may not have it wired correctly
You may have a bad wire or connector..

You should be able to leave the bulbs in the housing and check from the relay... if there is continuity all the way to the bulbs and back, they are not burnt.

A quick way to "test" is by using a meter... you can pull the lamps and do a "continuity" test on them, but you can do the same using the wires from the relay.. looking for low "resistance" as close to "zero" as possible.. certainly less than 2 ohms.

If you're having trouble making battery connections, use a "fork" style wiring connector.. loosen the battery terminal bolt and slide the new terminal betwen the post and the bolt head.. .. tighten.

As for the connection for the 30 amp fuse.. if it is going to the seat heater wire, then that is not right.. the main supply to the bluesea to pull 30 amps would need to be connected to the positive (+) battery terninal.... the wire from the seat heater can be used to "control" the relay...
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post #3 of 12 Old Mar 29th, 2009, 10:22 pm
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Re: Motolights Install Gone Wrong

When you say you ground to the bike, are you meaning the frame? Never ground to a BMW frame, if you did that, that's your problem.



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post #4 of 12 Old Mar 30th, 2009, 12:04 pm
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Re: Motolights Install Gone Wrong

What did you do about powering the relay. The relay closes the circuit between the power source and the motolights. If you aren't going to use the relay, you will need to unplug the relay and install a jumper on the switch legs. Take a short piece of wire and crimp on male spades, one at each end of the wire. Be sure to use #12 or #10 wire.

If you are using the seat heater switch to power the motolights, what about the heater? You'll have a hot seat when the Motolights are on.

Why not wire it correctly?

Dave

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Last edited by Daveh; Mar 30th, 2009 at 12:25 pm.
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post #5 of 12 Old Mar 30th, 2009, 5:39 pm Thread Starter
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Re: Motolights Install Gone Wrong

Quote:
Originally Posted by grifscoots
When you say you ground to the bike, are you meaning the frame? Never ground to a BMW frame, if you did that, that's your problem.
I'm using one of the three bolts near the BMW fuses. I was told that this was a good place to use to ground all of the circuits to my Bluesea.

Rob V.B.
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post #6 of 12 Old Mar 30th, 2009, 5:41 pm Thread Starter
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Re: Motolights Install Gone Wrong

Quote:
Originally Posted by Daveh
Why not wire it correctly?
At this point, I'm up for anything.

I want them wired to my my headlight for an always on connection. What is the easiest way of doing this?

Rob V.B.
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post #7 of 12 Old Mar 31st, 2009, 10:59 am
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Re: Motolights Install Gone Wrong

Quote:
Originally Posted by RVB1019
At this point, I'm up for anything.

I want them wired to my my headlight for an always on connection. What is the easiest way of doing this?
I think the ground to a bolt next to the OEM fuse holder should be OK but if in doubt just run it straight to the negative battery terminal.

Run the main plus 12 volts from the switched power on your Bluesea box through a 20/30 amp fuse. You could also run the low current + 12 volts for the coil side of the inline Motolight relay either from your Bluesea,assuming it's a switched power source, or pick up the +12 from the heated seat connection or the parking light. The ground for the coil side of the Moto relay can go to the same ground as the Bluesea. There may be other alternatives but that's pretty much what I would do.

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post #8 of 12 Old Mar 31st, 2009, 11:09 am
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Re: Motolights Install Gone Wrong

Rob... I wish you lived a little closer to Nor Cal... I'd rewire that dude for you and you would never have another concern.

I just got done installing a set of mirror mounted lights and have done three sets of Moto's, one PIAA and two Blue Sea installs.

The relay trip wire (IMHO) should go to the parking lamp. The seat heater wire can and will draw a lot of amps and movement on these connections always creates problems (i.e. opening the seat, adjusting the rear spring, etc. etc. etc.). IMHO, attaching a relay trip line here is not a good idea.

The Blue Sea should be PLUS and MINUS to the battery terms. While grounding to the bike is something your grandfather used to do, the Blue Sea is better suited to get power right from the battery. Use as a minimum 14 GA. wire. I use 12 GA in all my installs. Once complete, I have three positive connection wires on the battery and two negative connection wires on the battery. All other farkle bits and pieces (ground effects lighting, Moto lights, FRS power connections, side marker lamps, PIAA's, Sat radio, GPS, etc.) go to the Blue Sea. And all that crap about getting radio interference doing it this way is just that, a lot of crap.

I've done Auto switch, custom switch mount toggles, "ignition on" wiring and have yet to have one of those installations go bad or not work. For your installation, find the relay trip wire on the Moto Light harness. Route it to the front of the bike and hang in on the blue/white wire in the parking lamp (not the brown wire). Tape the connection once complete (use hot melt for sealing if you can).

In my travels I have seen two bikes that became charcoal. Both of them due to faulty wiring. I vowed that if I got a chance to farkle a bike, it would be done right the first time.

Uncle Mark

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post #9 of 12 Old Apr 25th, 2009, 12:15 pm
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Re: Motolights Install Gone Wrong

Rob...Did you get your Motolights hook up?

Dave

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post #10 of 12 Old Apr 25th, 2009, 12:44 pm Thread Starter
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Re: Motolights Install Gone Wrong

Not yet. I'm looking to someone in my local group look at it at the next tech session.

Otherwise, I'll bring it in to a local mechanic.

Rob V.B.
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post #11 of 12 Old Apr 25th, 2009, 8:28 pm
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Re: Motolights Install Gone Wrong

I guess I missed this post before STC, we could have looked at it then Rob.

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post #12 of 12 Old Apr 25th, 2009, 9:55 pm Thread Starter
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Re: Motolights Install Gone Wrong

We talked about looking at it but I felt awful asking for your help considering how beautiful the weather was that week. If it was raining, I definitely would have pushed the issue but because it was so nice, I said screw it- Let's Ride!

Rob V.B.
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