throttlebody powered by turn signal switch...AARRGG

[rodstored-72]

I know this is a very stupid situation, but my throttlebody "twitches" when I hook up the batt. & also when I use the turn signal switch!.. I do not even have a clue where to begin to figure out? I am hoping someone can help me trouble shoot (once they stop laughing). the engine is being installed and I have not fired up. I thought I had all powers wires correct, but I guess not....AARRGG!!

engine is a 4.8 stock with complete stock wire harness & stock fuse box
truck is a 1986 c10 2wd with stock complete harness.

please help!

thanks

[Ziegelsteinfaust]

I had a similar issue with my lights, and the windshield wipers.

It was a beat 66 C10 I got for practically nothing to do a quick flip because I had running gear.

Turned out the motor was partially grounded, and the sudden surge current would cause a slight flicker in the light. Or atleast that is what I was told by the guy who I took it to.

Along with the wiring being a bit hacked, and he fixed it all for me.

So you may have a bad blinker module or wires are crossed somewhere in the circuit. My current stepside had a "expert" work on it before. Luckily everything works fine so far after I cleaned up the mess a bit.

[rodstored-72]

Zeig,
I will double check my ground wires especially under the dash. I thought it might be related to grounding, but the power to the throttlebody butterfly from the wiper switch is what is really confusing.... how are the 2 items connected?? aarrggg!!

[Ziegelsteinfaust]

Is it possible to test if you run power to the throttle from the battery

[rodstored-72]

well I have done a little more investigating & made "lifeline call" to a friend.... I am under the impression that the butterfly will "twitch" when power is connected each time? also he indicated that it "sounds" like I might have the dash power on the same circuit as the engine power? hence why the turn switch "activates" the throttle body? .. thoughts??

thanks!

[rodstored-72]

well... after some time playing around with the orig. instr. cluster wires and batt wires I believe I have found the main issue & resolve. It appears that I connected the pnk/blk power wires to the "const. on" conn at the DD brain box instead of the "ACC ON" connection. so I now have the 2 pnk/blk wires connected to the "ACC ON" port & then just the solid pink wire connected to the "CONST. ON" port at the brain box for the digital dash. so no more blinker switch "twitch" at the butterfly. Hopefully this might also help someone in the future... I know now that the butterfly "twitches" when ever power is connected too.