I know it can be done.. - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

magnethead · 11-11-2006, 11:07 AM

this will be easy....

the fronts are straight forward other than removal of bettery and tray, in the back it's even easier. Brown is supply and Black is return, i'm assuming. Got 4 blacks in a wire nut with a 5th that goes to the frame. Got 4 browns in a wire nut with a 5th that goes to the trailer plug harness. Just have to remove the ground's wire nut and hook the turn wire onto it and remove the frame wire.

magnethead · 11-11-2006, 03:04 PM

Yet enother report-

Played around under the truck some more, and There's 4 wires going to the back in a loom: dark green, light green, yellow, and brown. I didn't have my keys so i just hit the flashers and the Dark Green and the Yellow had flunctuating voltages on my DIMM. Now is is safe to assume it's like a trailer, left is yellow, right is dark green? The rear is gonna be REAL easy, alot more-so than I thought.

boxrodz · 11-11-2006, 03:30 PM

Quote:

Originally Posted by magnethead

Is this right then?

Yup.
(I thought 'bout putting together a diagram after I had made my last post.)

boxrodz · 11-11-2006, 03:34 PM

Quote:

Originally Posted by magnethead

playing with my DMM last night, is it true that the marker circuit grounds out when the switch is pushed back to the off position? I turned them on to make sure the bulb lit, then popped the bulb out and turned the circuit off, both terminals had 0 resistance to ground. I couldn't get a probe on the turn signal wire to see if it does the same thing, does it?

If so, i might tackle that project on the 20th unless i can get to the passenger side wires without moving the battery (then i'll do it today).

Sounds like you're on your way.

On the '83, the flasher/hazard circuits are also switched to ground when flashing off.

boxrodz · 11-11-2006, 03:59 PM

Quote:

Originally Posted by magnethead

this will be easy....

the fronts are straight forward other than removal of bettery and tray, in the back it's even easier. Brown is supply and Black is return, i'm assuming. Got 4 blacks in a wire nut with a 5th that goes to the frame. Got 4 browns in a wire nut with a 5th that goes to the trailer plug harness. Just have to remove the ground's wire nut and hook the turn wire onto it and remove the frame wire.

Quote:

Originally Posted by magnethead

Yet enother report-

Played around under the truck some more, and There's 4 wires going to the back in a loom: dark green, light green, yellow, and brown. I didn't have my keys so i just hit the flashers and the Dark Green and the Yellow had flunctuating voltages on my DIMM. Now is is safe to assume it's like a trailer, left is yellow, right is dark green? The rear is gonna be REAL easy, alot more-so than I thought.

I'm guessing your Black wires are ground as you mentioned and the brown is the source wire for the rear parking lights. I wouldn't altered the black 'frame-to-ground' wire. Sounds like the dark green is the right directional signal wire and the yellow is the left directional signal marker. So, for the left rear side markers, tap into the brown wire (source for the parking light) and the yellow wire (source for the left signal marker). And, for the right rear side markers, tap into the brown wire (source for the parking light) and the dark green wire (source for the right signal marker).

Keep in mind that the wiring for the rear directional signal markers are also the source the rear brake lights. So, tapping the into these wires for the side markers will also cause the side markers to be activated when the brake pedal is depressed. The way around this is to tap into the wiring for the front signal markers.

magnethead · 11-11-2006, 05:23 PM

yea, I didn't test the Dark Green and Yellow wires for current when the brake is pressed. I have a 7 wire trailer harness, it has turn seperated from brake, so I can just tap onto it, can't I?

White: Ground (why not black who knows)
Brown: Tail-Lights, License & side marker lights
Yellow: Left Stop/Turn Signal
Green: Right Stop/turn signal
Red: Auxilary Power (5+ way)
Blue: Electric Trailer Brakes (6+ way)
Purple: Reverse Lights (7 way)

This is how I have it figured- Leave all the lights on the brown wire in that cluster (the 5th wire goes to frame loom, not to trailer harness like previously stated). Pull the ground wires apart, take the left grounds, put them in a bundle with a lead coming from the left turn wire of the trailer harness, and ditto for the right but going to the right trailer wire.

bcj67chevy · 11-11-2006, 05:25 PM

just put on a heavy duty flasher, stock part# 552 will do up to 6 bulbs, the towing flasher part# 575 will do up to 8 bulbs, the heavy duty part #232 will do up to 10 bulbs.

magnethead · 11-11-2006, 05:57 PM

It has a heavy flasher on it. The emergency flasher will be the strained one, as there will be 5 per side (
normal)/10 total during emergency flashing not including a trailer.

You win- a 35 ft run of dual polarity wires from the front end it is.

boxrodz · 11-11-2006, 08:03 PM

A single wire run on each side from the front to the rear for the rear side markers will do it. A multi-strand 20 AWG wire should suffice, but I'd probably go with 18 AWG.

You may find that the hazards have a heavy duty flasher (#552 or ?). But to be safe, upgrade the hazard and the directional signals like bcj67chevy mentioned to 575s or 232s and you should be set.

magnethead · 11-11-2006, 08:49 PM

I'm using 18 AWG wire, one down each frame rail. I already have 1 ran, just need to terminate it on both ends and run the opposite side.

magnethead · 11-11-2006, 10:02 PM

one thing i'm asking a bit late...

this IS legal, right? It's bad enough I don't have any tailgate lights, I'm hoping they don't deam the fact that the markers on the boxes flash being illegial due to the turning off part. I can't imagine them being mad though, it'd be nice if I had a copy of the inspector's booklet. I think i was told that inspectors only care about the 4 corners (it's a farm truck too), so they'll probably look the other way.

boxrodz · 11-12-2006, 02:50 PM

You would 'bably have to check with the law enforcement to find out for sure. But, I guessing that it's 'bably safer for everyone driving with sidemarkers that have the function of running lights and directional signals.

magnethead · 11-12-2006, 07:39 PM

what I figure..read a page on the texas website that lists what they check..doesn't say what lights can serve what functions..only that they check that they perform their functions.

11-11-2006, 11:07 AM	#26
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	Re: I know it can be done.. this will be easy.... the fronts are straight forward other than removal of bettery and tray, in the back it's even easier. Brown is supply and Black is return, i'm assuming. Got 4 blacks in a wire nut with a 5th that goes to the frame. Got 4 browns in a wire nut with a 5th that goes to the trailer plug harness. Just have to remove the ground's wire nut and hook the turn wire onto it and remove the frame wire.

11-11-2006, 03:04 PM	#27
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	Re: I know it can be done.. Yet enother report- Played around under the truck some more, and There's 4 wires going to the back in a loom: dark green, light green, yellow, and brown. I didn't have my keys so i just hit the flashers and the Dark Green and the Yellow had flunctuating voltages on my DIMM. Now is is safe to assume it's like a trailer, left is yellow, right is dark green? The rear is gonna be REAL easy, alot more-so than I thought.

11-11-2006, 05:23 PM	#31
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	Re: I know it can be done.. yea, I didn't test the Dark Green and Yellow wires for current when the brake is pressed. I have a 7 wire trailer harness, it has turn seperated from brake, so I can just tap onto it, can't I? White: Ground (why not black who knows) Brown: Tail-Lights, License & side marker lights Yellow: Left Stop/Turn Signal Green: Right Stop/turn signal Red: Auxilary Power (5+ way) Blue: Electric Trailer Brakes (6+ way) Purple: Reverse Lights (7 way) This is how I have it figured- Leave all the lights on the brown wire in that cluster (the 5th wire goes to frame loom, not to trailer harness like previously stated). Pull the ground wires apart, take the left grounds, put them in a bundle with a lead coming from the left turn wire of the trailer harness, and ditto for the right but going to the right trailer wire. Last edited by magnethead; 11-11-2006 at 05:26 PM.

11-11-2006, 05:25 PM	#32
bcj67chevy 402 BIG BLOCK Join Date: Mar 2006 Location: McClelland IA Posts: 286	Re: I know it can be done.. just put on a heavy duty flasher, stock part# 552 will do up to 6 bulbs, the towing flasher part# 575 will do up to 8 bulbs, the heavy duty part #232 will do up to 10 bulbs. __________________ 1967 C10 swb 1970 GMC Jimmy 4x4 2005 Chevy tahoe Z71 2001 Chevy impala

11-11-2006, 05:57 PM	#33
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	Re: I know it can be done.. It has a heavy flasher on it. The emergency flasher will be the strained one, as there will be 5 per side ( normal)/10 total during emergency flashing not including a trailer. You win- a 35 ft run of dual polarity wires from the front end it is. Last edited by magnethead; 11-11-2006 at 05:59 PM.

11-11-2006, 08:03 PM	#34
boxrodz Until Seventy Times Seven Join Date: Feb 2005 Location: Rocky Mountain Front Range Posts: 1,301	Re: I know it can be done.. A single wire run on each side from the front to the rear for the rear side markers will do it. A multi-strand 20 AWG wire should suffice, but I'd probably go with 18 AWG. You may find that the hazards have a heavy duty flasher (#552 or ?). But to be safe, upgrade the hazard and the directional signals like bcj67chevy mentioned to 575s or 232s and you should be set. __________________ boxRODz 1983 C10 SWB Fleetside When two halves is gone, there's nuthin left. Two nothings is nuthin. That's mathematics son. You can argue with me but you can't argue with figures. Two half nothings is a whole nuthin...

11-11-2006, 08:49 PM	#35
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	Re: I know it can be done.. I'm using 18 AWG wire, one down each frame rail. I already have 1 ran, just need to terminate it on both ends and run the opposite side.

11-11-2006, 10:02 PM	#36
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	Re: I know it can be done.. one thing i'm asking a bit late... this IS legal, right? It's bad enough I don't have any tailgate lights, I'm hoping they don't deam the fact that the markers on the boxes flash being illegial due to the turning off part. I can't imagine them being mad though, it'd be nice if I had a copy of the inspector's booklet. I think i was told that inspectors only care about the 4 corners (it's a farm truck too), so they'll probably look the other way.

11-12-2006, 02:50 PM	#37
boxrodz Until Seventy Times Seven Join Date: Feb 2005 Location: Rocky Mountain Front Range Posts: 1,301	Re: I know it can be done.. You would 'bably have to check with the law enforcement to find out for sure. But, I guessing that it's 'bably safer for everyone driving with sidemarkers that have the function of running lights and directional signals. __________________ boxRODz 1983 C10 SWB Fleetside When two halves is gone, there's nuthin left. Two nothings is nuthin. That's mathematics son. You can argue with me but you can't argue with figures. Two half nothings is a whole nuthin...

11-12-2006, 07:39 PM	#38
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	Re: I know it can be done.. what I figure..read a page on the texas website that lists what they check..doesn't say what lights can serve what functions..only that they check that they perform their functions.



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