Voltage drop ignition switch

  • calvin17d
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Voltage drop ignition switch

21 Jul 2011 23:17
#464187
Low voltage at the coils. Performed the drop test thanks to some guidance in other threads. Worked my way up the circuit testing all connections. Lost almost a 1.5 volts coming out of the back of the ignition switch.

Is this serviceable, or should I just buy a new one now?
1976 Kz900 A4

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  • MFolks
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Re: Voltage drop ignition switch

21 Jul 2011 23:19
#464188
Go to www.z1enterprises.com and see if they carry a replacement switch. Is the switch sealed? Can you get into it? Be careful, as springs & ball bearings can fly out!
1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)

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  • elfmagic17
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Re: Voltage drop ignition switch

22 Jul 2011 00:22
#464202
calvin17d wrote: Low voltage at the coils. Performed the drop test thanks to some guidance in other threads. Worked my way up the circuit testing all connections. Lost almost a 1.5 volts coming out of the back of the ignition switch.

Is this serviceable, or should I just buy a new one now?

Glad you found it!!
Kenny Hicks
74 Honda CB550
75 Honda CB360 (runs and rides good but not a show bike)
77 KZ650B1 (Runs Great, but needs painted and a little work.)

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  • Patton
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Re: Voltage drop ignition switch

22 Jul 2011 08:20
#464228
calvin17d wrote: Low voltage at the coils. Performed the drop test thanks to some guidance in other threads. Worked my way up the circuit testing all connections. Lost almost a 1.5 volts coming out of the back of the ignition switch.

Is this serviceable, or should I just buy a new one now?

If not already done, could try dousing the switch internals through the key hole with electronic spray cleaner such as Deoxit from Radio Shack, then using the key to manipulate the switch positions, and repeat douse/manipulation several times.

Might eliminate some internal corrosion inside the switch that could be causing the voltage drop.

Good Fortune! :)
1973 Z1
KZ900 LTD

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