Several things....
• There's no need to start a new thread. Keep ALL your correspondence about this problem in one single thread, PLEASE.
You need to keep ALL of your comments about this issue within ONE SINGLE thread. Especially within the same directory. In this way all the readers have a full record of the issues and repairs in chronological order, in one single place.
Per that requirement, moderators are Deleting your second "fuse" thread in this directory which covers the exact same subject matter.
Please ! This is your second and last warning.
Owning an old Airhead is easy.
Keeping an old Airhead running great is the true test.
I already got the message the first time you told me. I haven't started any threads since that initial topic. maybe your reading the same thing?
I took your advice of course and got the starter relay "dual87" like you said. followed the schematic. all seems good. still no power. the only difference i noticed is the schematic calls out a 87 and 87A input where as the relay just calls out 87 and 87. is there a difference?
Also i noticed that in addition to the main power from the positive terminal hookup there is a red power line that is spliced into create a double connect. one end of that line has power the other doesn't . one side branches off to the horn relay the other the starter relay. thought i had it figured but....
I did want to say upon testing all the power lines coming into the relay there is power there but when i tested the red wire going to the ignition switch inside the headlight i get no power. actually nothing lights the probe in there when i poke around
• The RED wire is "hot" all the time and straight from the battery. When the relay is in place you should have 12V on both RED wires at the relay socket. From the relay socket, that wire usually shows up on the rear of the ignition switch, or possibly on the RED section of the muti-color circuit board inside the headlamp.
If you've got a lighted test probe, connect the clip to a cyl head fin and poke around the RED wires under the tank and in the headlamp trying to make it light up.
Per the previously supplied schematic, if you have power on both #87 terminals of the starter relay, but none on the heavy gauge Red wire inside the headlamp, then by deduction the Red wire is broken between those 2 points.
Owning an old Airhead is easy.
Keeping an old Airhead running great is the true test.
thanks again for your help.
question...does everybody in the forum see my inquiries?
because I have only heard from you. i didn't want to over burden you with my rookie level of wrenching I love this bike .would love to get it going. just want to try everything I can before pulling the plug and taking her in somewhere and let the pros figure it out. . I thought others would chime in also having dealt with the same issue.
just checking. thanks again
All members have access to these forums and your thread.
Not all members view these forums.
Not all the members who view this thread choose to respond.
Owning an old Airhead is easy.
Keeping an old Airhead running great is the true test.
ok....then thanks so much for responding and helping me out! truly appreciated
From your messages and photo, in my professional opinion, you need to simply buy a new harness. Someone has been butchering on the present harness that does NOT know what they are doing. Furthermore, the presence of wire nuts is conclusive proof that not only are they electrically illiterate, but they were also ill-prepared to make lasting repairs to a motorcycle harness.
The truth is, any repair to this rat's nest will simply leave you stranded in the near future. Mr Murphy predicts that will not happen until you are at least 300 miles from home. Four hundred dollar towing fees have a way of making the price of a new harness look like the bargain of a lifetime. 😛
You can get German-made harnesses from Motorrad Eliktrik for about half the price of the same thing from BMW.
Owning an old Airhead is easy.
Keeping an old Airhead running great is the true test.
My cat wants to join the conversation. But I warn you, she can't type and knows absolutely nothing about elec-trickery.
Owning an old Airhead is easy.
Keeping an old Airhead running great is the true test.
lol...yeah i think your right. the guy i got it from was a knucklehead.I think that he thought he could fix it. would it be worth trying to run a red power wire the to headlight source from the relay bypassing the possible damaged one in the harness just to see if that was it? or am i now the knucklehead?
Yes, you can take one of your troubleshooting jumpers and jump from the relay terminals with a Red wire and then connect the other end to the ignition switch... as a Test. But you can't ride with a repair like that. Motorcycle harnesses operate in one of the most severe environments possible.
You'll be broken down and walking home in no time if you try to repair what you've got.
Owning an old Airhead is easy.
Keeping an old Airhead running great is the true test.
copy that! once again thank you. Ill keep you posted. but I'm nearing the qualified mechanic in the near future..i can feel it. with your helped be so proud to finally figure something out myself but....not feeling the love on the birds nest..lol
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