1936 LS1

iTrader: (10)

Ok. Fired the car up for the first time about 11:30 last night (no mufflers, You're welcome a-hole neighbor next door!). Anyway, I'm cleaning up this morning and found the resistor in the pic below on the floorboard.

Any of you harness gurus know where this might have come from? I don't recall ever seeing it during installation.

1976CamaroGuy

iTrader: (8)

Tach maybe? It looks like something I used on mine

ls1nova71

iTrader: (4)

It kind of looks like a 'pull up' resistor for a tach, but if you didn't put one in it, it probably isn't.

And how did you know I have an a-hole neighbor? I doubt she heard you start your car, but thanks anyway!

1936 LS1

iTrader: (10)

I guess everyone has one! The cool neighbors came over for the "grand event". The others got a little payback.

I e-mailed the harness builder (his only method of contact) but it usually takes a full day to get a response from him. I didn't put that in but it had to have come from the harness. I just don't know where or how it suddenly appeared on the floorboard this morning. Never seen it before.

71403

Don't see where a 6.9k resistor would have any place in the harness.

Even if it did that sure as heck isn't the way to put a resistor in-line!

bczee

iTrader: (12)

I don't recall any Resistors that would have that type terminal on it on either of my Harnesses.. for grounding or to connect to a power block ??

6.9k would not be for the Alternator activator... that would be out....

???

BC

green96ta

iTrader: (11)

The only time a harness would need a resistor would be for alternator activation on any vehicle that does not use the pcm to excite the alternator or for a led bulb to keep it from glowing dimly constantly.

As stated before

1. That is def. NOT the way you put a resistor in line.
2. That resistor is too large for either application.

Pop N Wood

iTrader: (1)

If the car has gone through multiple owners then it could be anything. Might have been lodged behind a vent for years. If had to guess maybe a tach resistor. It is pretty common need to a 10-15 kohm resistor in line with the tach signal to keep the tach from jumping around when using an older tach with an HEI ignition.

1936 LS1

iTrader: (10)

Harness builder confirmed it's not something of his. Who knows, who cares? Car is running fine. Must've come from something else.

1936 LS1

iTrader: (10)

Ding, ding, ding! We have a winner! After determining it to be a 6800 ohm resistor, I figured it was worth a try in getting my Classic Instruments tach to work. Installed the fork under 12v supply at the gauge and spliced the other end into the ECM tach signal wire and "Voila!" Gauge appears to work properly.

I'm guessing it was in the Classic Instruments gauge box and fell out at some point. I bought the gauges used (installed but never run) and my guess is that the previous owner stuck it in the bottom of the original box.