Yep, Was able to put my hands on the instructions that came with the Crane
Cams Electronic Ignition I installled on the positive ground TR-4 years ago.
Now .. . I will readily admit that I don't know squat about electronics or
electrical stuff in general. So don't press me on the details . .I'm only
regurgitating what it says where on the instruction documents:
Crane Cams Tech Note:
XR700 12Volt postive ground installation
Read this first.
Warning: Use this hookup only for special XR700 12 volt positive ground
ignition module part number 720-0001. Do not use standard XR700 12 volt units
for positive ground.
(then it gives the details of the hookup by means of a diagram)
Now that I've read it . . .I notice that it doesn't say not to use the positive
ground module on a negative ground application. Instead it says not to use a
standard module for a postive ground application. So . . .I guess this doesn't
refute what Randall, Dave or others might have said.
I sure would like to convert this sucker to negative ground.
Seeing how much I've spent on the cars in the past few weeks though . . I'd
really hate to toast a perfectly good electronic ignition module though.
Scott Tilton
Electrical Ignoramus
Leesburg, VA
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