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Labor Day Putting down your wrenches or time for MORE wrenching? 
Plenty of places to share. | | Click on image for the lowdown. 
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| | | Forums66 Topics128,010 Posts1,055,299 Members48,419 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | D-R appears to be for bypassing the ballast resistor. I have never seen one marked that way. They are usually marked IGN1 and IGN2. The terminal that is hot in 'run' position goes to the ballast resistor. The one hot in 'start' bypasses the resistor.
If you have an internal resistor coil, jumper the terminals. | | |
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