odd electrical issue - anyone seen this one? - Defender Source
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Old December 24th, 2013, 11:21 AM
akrockhound's Avatar
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1988 RHD 110
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Location: Alaska, Washington
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odd electrical issue - anyone seen this one?

My '88 ROW 110 has done this twice. While driving, the radio and heater fan turn off and the ignition switch chimes (like it does after you turn engine off). The engine keeps running and all other electrical circuits (like the lights) keep working fine.

What it looks like is that the entire circuit that is only on when the ignition is on - suddenly turns off. If I shut down/restart the vehicle it all comes back on.

Wiggling the ignition key does not help. I realize it could be a loose wire in the ignition, or a bad ground almost anywhere, but wondered if this circuit is on a relay and maybe the relay is failing. Anyone know if/where the relay is? My hunch is that its a bad connection between the ignition switch and the relay or the relay is failing.

Is there a way to identify the wiring for this "ignition on only" circuit so I can follow it around to look for loose connections or ground?

I appreciate any ideas.
'88 ROW 110 5-door SOLD
'01 Disco II
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Old December 24th, 2013, 11:48 AM
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Jason England
D-90 White 95 SW #65
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start with the ignition switch ...
Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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Old December 24th, 2013, 05:31 PM
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Capt Milks
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Defender V-8, Defender 2.25
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It is easy to pull the plastic off the steering column and check the wiring on the back of the switch. If it works again you may have a bare wire problem but more than likely it is the switch as mentioned above. Off the back of the switch you will have a switched circuit that goes to the fuse box. Some of the newer trucks will have a maxi fuse box on the firewall. If you do a search you can find a wiring diagram and start troubleshooting it. However those switches do go bad.
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