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#1 |
New Member
![]() Join Date: Jan 2023
Location: Katy, TX
Posts: 2
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1967 C10 Parasitic draw
I have been chasing a parasitic draw on my1967 C10 project truck and hoping the forum may have some ideas to chase. The battery drains over a few days and requires recharging. I did review prior posts on this issue, which helped me get to my current state.
Here is what I have checked so far. Reading between negative post and cable is 1.20 amps. If I disconnect the red hot wire from the battery to the inside fuse box, then the amp drain is eliminated. As a result, I started looking for short circuits inside the cab. I removed each of the fuses to try and identify the problem circuit with no change in AMP reading. I unplugged the headlight, and wiper switches with no impact as well as the brake switch. Appreciate any thoughts on how I can chase down this issue. Thanks, Lance |
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#2 |
Senior Member
![]() Join Date: Dec 2009
Location: TN.
Posts: 8,079
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Re: 1967 C10 Parasitic draw
Do you have another Battery?
Sometimes a Bad Battery causes this issue. The Battery may not be your issue but it is something to consider. Another member had a Draw and it was the Battery. Electrical problems can cause Headache's ![]() So, something as simple as trying an Extra Battery may eliminate some issues.
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________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build |
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#3 |
Registered User
Join Date: Oct 2009
Location: Denton, Texas
Posts: 1,713
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Re: 1967 C10 Parasitic draw
Just a thought, check the bulb in the dome light. I have heard of the bulb being blown out and still drawing amps.
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1968 C10 327, 3 speed manual, LWB stock height daily driver. 1968 C20 327, 4 speed manual, LWB stock height custom camper with heavy duty leaf springs rear, 50th anniversary edition. Hoping to press into daily drive status soon. |
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#4 |
New Member
![]() Join Date: Jan 2023
Location: Katy, TX
Posts: 2
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Re: 1967 C10 Parasitic draw
Thanks guys, appreciate the suggestions. I believe I stumbled upon the fix. I noticed this morning my aftermarket clock guage was making a clicking sound while doing the drawdown test. Pulled out the guage cluster and the ground wire was not fully seated in the cluster. I tightened back down and now the drawdown is .08 amps, which seems reasonable I need to reassemble and attach the light and wiper switches, but hopefully this is resolved. On to the next item.
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Tags |
battery drain, electrical connection, parasitic draw |
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