Weldingman
Registered User
I have a two random wires on the drivers side firewall wondering if anyone knew what they were for. One is green with a yellow stripe. The other is black.
Random wires
- Thread starter Weldingman
- Start date
IDIBRONCO
IDIBRONCO
I think that the hood light wires use a connector like that one, but I'm pretty sure that it hooks to power, not ground. The hood is supposed to be grounded by it's own dedicated braided steel wire on the passenger's side.
Weldingman
Registered User
Yes the hood has the braided ground strap. Those wires are just hanging in the breeze seems kind of random. Everything seems to be working. I was hoping one of them was for the coolant temp sender. I bought the truck 6 months ago and it seems like the truck never comes the C needle on the gauge. I replaced the sender and thermostat with a ford oem one. Checked the radiator cap and flushed the system with about 20 gallons of distilled water and charged it with the appropriate SCAs and antifreeze concentrate. It’s an aftermarket aluminum radiator I was wondering if it was too big and not allowing the engine to get up to temp, but that wouldn’t make sense if the thermostat was working properly. I plan on putting an aftermarket engine temp gauge because I hate not knowing what it is. The truck is a welding rig and never tows but I still don’t like it. I plan on putting a vacuum gauge as well.
A lot of money has been wasted over the years from someone troubleshooting using the factory gauges. If you are worried about your truck's health and well being, get a set of aftermarket gauges and use them.
Not sure what year truck you have, but in 1986 they did have a underhood courtesy lamp that was fed by a lightgreen/yellow wire with a black wire. The lightgreen/yellow feeds all the courtesy lights in the truck at the door jamb switches, the glovebox, and map lights if you have those options.
Not sure what year truck you have, but in 1986 they did have a underhood courtesy lamp that was fed by a lightgreen/yellow wire with a black wire. The lightgreen/yellow feeds all the courtesy lights in the truck at the door jamb switches, the glovebox, and map lights if you have those options.
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Weldingman
Registered User
Yup my truck is an 86, that’s gotta be what it was for.
IDIBRONCO
IDIBRONCO
None of the wires for the factory gauges used a plug in line like your pictures show. The reason for the plug in this wire was to allow you to remove the hood while leaving the light attached. Assuming that it's for the hood light. I'll second the aftermarket gauges. You just can't trust the factory ones.
Weldingman
Registered User
The vacuum line seems to go to some kind of distribution box with 4 or 5 other lines that are plugged. The truck is non ac. Can I take one of the rubber boots off that box and use it for my vacuum gauge?
Big Bart
Tow&Slow
You probably will be glad you did. I was coming off the freeway the other night towing a trailer. My vacuum pump had failed on the freeway but thankfully the light at the bottom of the ramp was green. Without power assist I would not have likely stopped in time for cross traffic even with the e-brake. My vacuum warning “Brake“ light did not come on. As we all share on this site the dash gauges and lights can not be relied on.
IDIBRONCO
IDIBRONCO
I was only in my converted Bronco running empty when that happened to me. That was scary enough. To have that happen when you're pulling a trailer must be completely terrifying.
Big Bart
Tow&Slow
It was a little scary to say the least. The trailer I was pulling had surge brakes which did nothing to help me slow down. It was shocking how even though I pushed the pedal very hard how little the brakes worked. I have had other vehicles when they stalled and the vacuum in the booster was gone, they still seemed to stop pretty good by pushing ******* the brake pedal. But my truck did not want to really stop. Now I am curious how well the e-brake works.
I lost the alternator belt on my RV without realizing it. Thankfully it was in the flat area of east Amarillo so i was able to get to a truck stop to park overnight, so i could put on the spare belt the next morning on a cold engine. you can't do much with a full operating temperature radiator on a van. Even just checking the oil is difficult. You have to put on a heavy coat or at least lay one over the radiator as an insulator so you don't burn your arm messing with the crazy long dipstick.
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