HELP- - Re-wiring a 74 Trillium 13' - Page 2 - Fiberglass RV

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Old 04-10-2009, 10:59 PM   #15
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Trailer: 76 Trillium 13 ft
Posts: 8
Will the trailer be grounded through my tow vehicle in that case? Or do the wires need to be grounded in the trailer as well?

Thanks guys


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Old 04-11-2009, 02:06 AM   #16
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Name: Roger
Trailer: 2009 Trillium 1300 "Homelet"/2014 Subaru Outback "Rosie"
Posts: 2,155

For all the Vintage Trillium owners, this may be helpful:
All Trilliums were made to the standard 'Bargman' color code.
Green- Running lights
Red - Left turn
Brown - Right turn
Black - Interior, Battery
White - Ground
Blue - Brakes
Yellow - Optional 'Foreign car wiring'
We modified many early Trilliums with an extra bulb in each tail light to perform the function of a stop lamp. This extra bulb was connected to the yellow wire. This was only done to customer's units as per request. Since these trailers change many hands now, have a look at the tail light assembly to see what's back there.

If anyone is having difficulty figuring out their Trillium, I'll be happy to help.
Please email me at Projects[at]

Trillium RV
Does this apply to NEW Trilliums as well?

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Old 04-13-2009, 06:47 PM   #17
Trailer: 1974 Trillium 13 ft
Posts: 55
thanks everyone. i took the trailer to the local rv guy here in Delta (AL's RV0 and he cleaned up the wiring and got it all working for $145. Pretty good price and I was totally lost with the mess the cursed previous owner had left me with.

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Old 04-16-2009, 11:20 AM   #18
Trailer: Trillium Manufacturing
Posts: 30
Roger: Yes, I should have stated that this is for all Trilliums - old & new.

Pete: You are correct - the top 3 reasons for electrical wiring issues is Grounding. - Usually in the tow vehicle. Grounding through the hitch ball is a not a reliable method.

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Old 08-21-2013, 12:17 PM   #19
Junior Member
Name: Jay
Trailer: 76 trillium
Posts: 1
Have a 76 trillium .need to rewire lighting .need a wiring guide ...could you help me ? Jay allcomplus@
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Old 08-21-2013, 06:00 PM   #20
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Name: Billy
Trailer: Trillium
Posts: 23
Like Pete says GROUND.I have a 1978 4500 and after 2 days of work found ground WIRES not wire was the problem.RUST in tail light bulb,rust on every ground wire in every light.
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Old 10-05-2015, 08:35 AM   #21
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Name: David
Trailer: Trillium 13'
Posts: 28
I just rewired for a travel trailer and there are differences in the colour codes of the wiring on a 4 way flat between REGULAR trailers and an RV. The 7 way I purchased was wired for a regular trailer NOT an RV. The colours of the 4 way flat were totally different and I had to swap a few wires around to get everything working the way it should (left signal, right signal and running)

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