85 El Camino -- Electrical weirdness!

K-Toe

Not-quite-so-new-guy
Feb 11, 2021
39
8
As mentioned in my previous posts, I pulled the 350 and 700R4 and cleaned and painted the engine bay. I modified the engine wiring as required with the Sniper EFI and Hyperspark installation. Other than temporarily unclipping the lighting wiring to remove the fenderwells for ease of cleaning and painting, I did nothing to the stock lighting wiring harness. This is where the weirdness begins!!

My park lights, emergency flashers and turn signals work, but my headlights do not. My windshield wiper also works, but they won't turn off. I double checked to ensure that the headlights were grounded. Other than that, I'm clueless as to how to rectify these two problems.

Any suggestions?

20220417_174750.jpg
 
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g0thiac

G-Body Guru
Sep 6, 2020
795
63
As mentioned in my previous posts, I pulled the 350 and 700R4 and cleaned and painted the engine bay. I modified the engine wiring as required with the Sniper EFI and Hyperspark installation. Other than temporarily unclipping the lighting wiring to remove the fenderwells for ease of cleaning and painting, I did nothing to the stock lighting wiring harness. This is where the weirdness begins!!

My park lights, emergency flashers and turn signals work, but my headlights do not. My windshield wiper also works, but they won't turn off. I double checked to ensure that the headlights were grounded. Other than that, I'm clueless as to how to rectify these two problems.

Any suggestions?

View attachment 196778
Where is your main ground on your setup?
 

g0thiac

G-Body Guru
Sep 6, 2020
795
63
The engine is grounded in two ways. It is grounded to the frame and the body.
And you have inspected both of those by pulling on the connections, on each side correct?
 

g0thiac

G-Body Guru
Sep 6, 2020
795
63
Yes! Plus...both of the grouping straps are new.
Alright. Make sure the fuses are ok, and if that is good, try grounding the headlights somewhere else.
 

K-Toe

Not-quite-so-new-guy
Thread starter
Feb 11, 2021
39
8
g0thiac:

Okay...I will do that and get back to you! Appreciate the quick responses!!
 
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Wraith

Royal Smart Person
Jan 13, 2013
1,543
113
DFW, TX
Sounds like a connector problem. As an aside, make sure you have great idle voltage on the Sniper, we had immediate results in the car running better with a 150 amp alternator that ran 14+ volts at idle.
 
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