I am building a engine test stand on a shoe string budget. I'm gona get a duraspark harness from the boneyard. I bought a new painless duraspark harness for my truck and it worked great. But the new harness came with a inline resister and I don't thank the factory ones have this. Do i need the resister inline with the harness?
Thanks buddies
https://www.google.com/search?q=duraspa ... Fd4Sjg8%3D
duraspark resister
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timmytim
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duraspark resister
Last edited by timmytim on Thu Jul 16, 2015 6:05 pm, edited 1 time in total.
buy'em dirty sale'em clean
get more money for the same
machine.....
My 1967 bump: http://www.fordification.com/forum/view ... 09#p668209
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motzingg
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Re: duraspark resister
I'm sorry my response won't be more helpful but...
it depends.
From what i've read online the 'red tab' boxes were higher energy and didn't have a resistor, the blue and yellow tab boxes appear to have the resistor but i cant confirm that. I have been running mine wide open on white, and resisted on red (red to pink from dash cluster)
The main reason for the resistor in points cars was to not melt your coil by feeding it a full 12v wallop of high current. It would probably depend more on what coil you're running than the box itself.
THAT SAID, i did manage to fry my DS box when i swapped my engine by hooking it up wrong. What did i hook up wrong? I dont know, stabbed it in, it was acting weird, swapped box, switched some wires around and it fired up and ran... I think i might have fed 12v into the coil output wire? Not sure...
If you're only running for a little while, you should be fine with out a resistor. I wouldn't waste time trying to find some specific DS harness, just make jumper wires to get it running on the stand.
it depends.
From what i've read online the 'red tab' boxes were higher energy and didn't have a resistor, the blue and yellow tab boxes appear to have the resistor but i cant confirm that. I have been running mine wide open on white, and resisted on red (red to pink from dash cluster)
The main reason for the resistor in points cars was to not melt your coil by feeding it a full 12v wallop of high current. It would probably depend more on what coil you're running than the box itself.
THAT SAID, i did manage to fry my DS box when i swapped my engine by hooking it up wrong. What did i hook up wrong? I dont know, stabbed it in, it was acting weird, swapped box, switched some wires around and it fired up and ran... I think i might have fed 12v into the coil output wire? Not sure...
If you're only running for a little while, you should be fine with out a resistor. I wouldn't waste time trying to find some specific DS harness, just make jumper wires to get it running on the stand.
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timmytim
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Re: duraspark resister
Thanks
buy'em dirty sale'em clean
get more money for the same
machine.....
My 1967 bump: http://www.fordification.com/forum/view ... 09#p668209
My 1970 Bump: http://www.fordification.com/forum/view ... 16&t=50726
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sargentrs
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Re: duraspark resister
I swapped in a Duraspark dizzy and blue grommet box in my truck. Got my power feed from the switched full 12v wire on my ignition switch, bypassing the resistor wire. Never even switched coils and never had a problem.
Randy
1970 F100 Sport Custom Limited LWB, 302cid, 3 on the tree. NO A/C, NO P/S, NO P/B. Currently in 1000 pcs while rebuilding. Project thread: http://www.fordification.com/forum/view ... 22&t=59995 Plan: 351w, C4, LSD, pwr front disc, p/s, a/c, bucket seats, new interior and paint.
1987 F-150 XLT Lariat, 5.0/C6 auto.
1970 F100 Sport Custom Limited LWB, 302cid, 3 on the tree. NO A/C, NO P/S, NO P/B. Currently in 1000 pcs while rebuilding. Project thread: http://www.fordification.com/forum/view ... 22&t=59995 Plan: 351w, C4, LSD, pwr front disc, p/s, a/c, bucket seats, new interior and paint.
1987 F-150 XLT Lariat, 5.0/C6 auto.
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motzingg
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Re: duraspark resister
Thanks sarge, that is exactly what we needed to know!!
When i rewire my truck i'll be ditching the resistor then.
When i rewire my truck i'll be ditching the resistor then.
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sargentrs
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Re: duraspark resister
I just bought one of those clip on connectors with a male spade on the side. Clipped it around the wire and plugged into it with my ignition wire from the box. Very easy and took minutes.
Randy
1970 F100 Sport Custom Limited LWB, 302cid, 3 on the tree. NO A/C, NO P/S, NO P/B. Currently in 1000 pcs while rebuilding. Project thread: http://www.fordification.com/forum/view ... 22&t=59995 Plan: 351w, C4, LSD, pwr front disc, p/s, a/c, bucket seats, new interior and paint.
1987 F-150 XLT Lariat, 5.0/C6 auto.
1970 F100 Sport Custom Limited LWB, 302cid, 3 on the tree. NO A/C, NO P/S, NO P/B. Currently in 1000 pcs while rebuilding. Project thread: http://www.fordification.com/forum/view ... 22&t=59995 Plan: 351w, C4, LSD, pwr front disc, p/s, a/c, bucket seats, new interior and paint.
1987 F-150 XLT Lariat, 5.0/C6 auto.
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sargentrs
- 100% FORDified!
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- Joined: Fri Jun 22, 2007 9:30 am
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Re: duraspark resister
Found a photo of how and where I tapped into my ignition switch.
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Randy
1970 F100 Sport Custom Limited LWB, 302cid, 3 on the tree. NO A/C, NO P/S, NO P/B. Currently in 1000 pcs while rebuilding. Project thread: http://www.fordification.com/forum/view ... 22&t=59995 Plan: 351w, C4, LSD, pwr front disc, p/s, a/c, bucket seats, new interior and paint.
1987 F-150 XLT Lariat, 5.0/C6 auto.
1970 F100 Sport Custom Limited LWB, 302cid, 3 on the tree. NO A/C, NO P/S, NO P/B. Currently in 1000 pcs while rebuilding. Project thread: http://www.fordification.com/forum/view ... 22&t=59995 Plan: 351w, C4, LSD, pwr front disc, p/s, a/c, bucket seats, new interior and paint.
1987 F-150 XLT Lariat, 5.0/C6 auto.
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timmytim
- Blue Oval Fan
- Posts: 584
- Joined: Tue Apr 13, 2010 11:47 pm
- Location: suburb of Birmingham Alabama
Re: duraspark resister
thanks friends
buy'em dirty sale'em clean
get more money for the same
machine.....
My 1967 bump: http://www.fordification.com/forum/view ... 09#p668209
My 1970 Bump: http://www.fordification.com/forum/view ... 16&t=50726