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Randy Forbes

Randy Forbes

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<blockquote><font size="1" face="Verdana, Arial">quote:</font><hr>Originally posted by Dave Russell:

I don't think so. The switch should connect the coil wire to ground (not the hot side) when it is in the battery off position. This is a theft deterrent that grounds the ignition with the battery switch off. I think that you have the two large connections to the switch reversed.
D<hr></blockquote>

I concur
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I am currently installing a new wiring harness in my 67 BJ8. While studying the wiring diagram in my manual I noticed a wire that goes from the ignition coil all the way back to the battery cutoff switch. Normally this is on open circuit until the battery switch is selected off. It is then connected directly to the battery, allowing the ignition circuit to remain energized while the rest of the car is isolated from the battery. Am I correctly reading the diagram and what is the purpose? This one really has me scratching my head.
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<blockquote><font size="1" face="Verdana, Arial">quote:</font><hr>Originally posted by sky:
Am I correctly reading the diagram and what is the purpose? This one really has me scratching my head.
cheers.gif
<hr></blockquote>
I don't think so. The switch should connect the coil wire to ground (not the hot side) when it is in the battery off position. This is a theft deterrent that grounds the ignition with the battery switch off. I think that you have the two large connections to the switch reversed.
D
 
Yep, anti-theft device.

Also a source for problems when this wire is cut or broken and allowed to "roam" about in the boot. The usual comment is: "The car was running perfectly, I went around the corner and it just quit." Followed by: "I got the tools outta the boot and it suddenly started working again, what the devil is going on?"
 
<blockquote><font size="1" face="Verdana, Arial">quote:</font><hr>Originally posted by ThomP:
Yep, anti-theft device.
<hr></blockquote>

I think it is better called an anti run device as you say. If I were carelessly parking my car on the street & leaving it unattended the device "might" be useful. I prefer to take other precautions & leave the "device" disconnected. One less thing to go wrong. The point is often raised that a Healey can be hot wired with a simple jumper on the fuse block. This is true but it wouldn't be much harder to cut the distributor ground wire & defeat the anti theft also.
D
 
This wire caused me some anxious moments while on the road last summer. The CHP officer pulled up and
asked "electrical problem?" How'd he know ?
For some reason, the end for the cut-off switch ends up 'roaming around' and grounding itself.
Maybe we should just hook it up correctly the first time !
While in Eureka, Dave Nock mentioned that they usually do not connect this wire at the coil end...
 
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