MCI MC9 Clearance light wiring

BRUISER · July 18, 2015, 06:46:52 AM

hey all,

I have been searching with no luck.

My clearance lights have always had issues so I called LUKE and had him send me all new units

today I took the first front one off and as I was unscrewing it the wires just separated so I cant tell which side is which.. the stock wires are both brown with no lettering on them.

mine are still 24 volt so I cam trying to figure out which side is hot and which side is the ground? or am I wrong and with these it doe snot matter?

any help would be great as I need to get these fixed asap so i can pass my bus inspection that I need to do next weekend.

thanks Ken C

gumpy · July 18, 2015, 01:51:39 PM

As they are incandescent, it may not matter, but technically, there is a "correct" way. The numbering is printed all along the wires, usually in white lettering.

Suggest you get out the multimeter and test the two wires if you can't find it.

BRUISER · July 19, 2015, 02:41:46 PM

after messing with them for a while I used a good volt meter and I finally was able to find the polarity of the wiring and was able to get them connected and working.

I installed 6 of the front 7 so far.. still have 1 more front and the 7 rear

Scott & Heather · July 20, 2015, 01:25:22 AM

I marked mine with tape so I could know the polarity and now that I've replaced mine with LED I'm glad I knew the polarity

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PRZNBUS · July 21, 2015, 05:42:23 AM

Quote from: Scott Bennett on July 20, 2015, 01:25:22 AM
I marked mine with tape so I could know the polarity and now that I've replaced mine with LED I'm glad I knew the polarity

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Where did you get your LED lights?

Bruce

Brett G · July 21, 2015, 07:46:30 PM

HI Bruce, I just replaced the side marker lights on my MC7 with LED. 24 volt is hard to find, especially the larger size that I needed. I got them at Napa and they are a Grote light. IF you need more details.....just say. Couple Pics

https://goo.gl/photos/YizvhkAmGCJg3yDZ9

Scott & Heather · July 21, 2015, 08:38:48 PM

I wired mine 12 volt. They aren't 24 anymore. Sorry. That doesn't help you. I know. But here's a couple of links for 24 volt LED:

http://www.grote.com/products/47362-red-3-inch-24-volt-supernova-thin-line-led-clearance-marker-light/

http://www.bigrigchromeshop.com/marker-clearance-lights-24-volt-c-134_1001_2312.html

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Jim Eh. · July 22, 2015, 06:22:44 PM

Have you priced out the ones from MCI? http://www.mcicoach.com/parts/coachGuard/ledLamps.htm