The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Hei to unfused ignition, how big a fuse for inline fuse ?

dwaite72lnghrn · 12-13-2004, 07:38 PM

I haven't used fuses on HEI I have put in. If you use 10 gauge wire it is larger than the fusible link off the battery so it should not melt before the fusible link. But a fuse would make sense as most other large current accs. use a fuse like AC, Blower and all of the lights. the lighter stuff would use fuses because the wire is much lighter than the fusible link and would burn the harness. The internals of the dizzy are only about 18gauge so you know it is not pulling a lot of current. I haven't put a meter on it to see what it draws but I would say it not a lot.

12-13-2004, 07:38 PM	#15
dwaite72lnghrn Registered User Join Date: Jun 2002 Location: central pa Posts: 1,525	I haven't used fuses on HEI I have put in. If you use 10 gauge wire it is larger than the fusible link off the battery so it should not melt before the fusible link. But a fuse would make sense as most other large current accs. use a fuse like AC, Blower and all of the lights. the lighter stuff would use fuses because the wire is much lighter than the fusible link and would burn the harness. The internals of the dizzy are only about 18gauge so you know it is not pulling a lot of current. I haven't put a meter on it to see what it draws but I would say it not a lot. __________________ 72 longhorn c30 502BB/th400/fact air/4.11rear/ custom camper 72 bug(the better half's) under reconstruction 2009 HHR aqua blue 71 GMC k20 350/sm465 2009 Chevy hd3500 6.6 Victory Red crew cab dually Dave & Jeanne