wiring harness for trailer lights

srich250 · 08-05-08, 12:11 AM

I am trying to wire a trailer wiring harness at my rear bumper and I can't get any power through any of the existing wires.
the old outlet on the truck is gone so all if have is the loose wires

any help is much appreciated. i have wired a lot of chevy trucks in the past and this is my first toyota..just in case there is something unique that i don't know.

thanks

srich250 · 08-05-08, 12:23 AM

found my answer..thx.....Hoppy 48845

srich250 · 08-05-08, 01:39 AM

I installed a Hoppy 48845 and at the end of the new 4 wires that come out, i still have no power out when trying tail, brake, or turn.
does anyone have any ideas on why I still can't get power?
thanks a lot
Scott

Ebag333 · 08-05-08, 02:32 AM

Quote:

Originally Posted by srich250

I installed a Hoppy 48845 and at the end of the new 4 wires that come out, i still have no power out when trying tail, brake, or turn.
does anyone have any ideas on why I still can't get power?
thanks a lot
Scott

How did you install it?

srich250 · 08-05-08, 08:41 AM

the 5 wires off the truck spliced into the the hoppkins adapter/then out to my new 4 flat wiring harness.all connections are tight.

corsair23 · 08-05-08, 01:53 PM

Do you have a lot of lights on the trailer?

The reason I ask is that my popup does and I get brake and turn signals but no running/parking lights at the trailer when I turn on the headlights. I've read that the stock Toyota wiring in some cases isn't "strong" enough to power a lot of additional lights so they suggest you add a power source to "up" the power output. My LX came with such a gizmo but I still get nothing at the trailer. When checked at the plug however everything is hooked up correctly.

I'm thinking it is time for a new "gizmo"...I can't remember what it is called at the moment but IIRC Hoppy sells it. You run power direct from the battery through this and splice in the wiring for the trailer lights.

Ebag333 · 08-05-08, 02:45 PM

Or (if this is the case) run LED's.

srich250 · 08-06-08, 08:10 AM

thanks for the replies but I dont have any power at the end of the plug before even connecting to the trailer. I will resend a new post since I dont think I did this one well enough and i haven't done many and this is driving me nuts not being able to get power
thanks all

08-05-08, 12:11 AM	#1
srich250 IH8MUD Rookie Join Date: Apr 2007 Location: Tucson,AZ Posts: 46	wiring harness for trailer lights I am trying to wire a trailer wiring harness at my rear bumper and I can't get any power through any of the existing wires. the old outlet on the truck is gone so all if have is the loose wires any help is much appreciated. i have wired a lot of chevy trucks in the past and this is my first toyota..just in case there is something unique that i don't know. thanks __________________ 1997 FJ80, locked w/4.88's, 35 MTR's, 1"spacer +850J/863J

08-05-08, 12:23 AM	#2
srich250 IH8MUD Rookie Join Date: Apr 2007 Location: Tucson,AZ Posts: 46	found my answer..thx.....Hoppy 48845 __________________ 1997 FJ80, locked w/4.88's, 35 MTR's, 1"spacer +850J/863J

08-05-08, 01:39 AM	#3
srich250 IH8MUD Rookie Join Date: Apr 2007 Location: Tucson,AZ Posts: 46	still need help iwth wiring harnes I installed a Hoppy 48845 and at the end of the new 4 wires that come out, i still have no power out when trying tail, brake, or turn. does anyone have any ideas on why I still can't get power? thanks a lot Scott __________________ 1997 FJ80, locked w/4.88's, 35 MTR's, 1"spacer +850J/863J

08-05-08, 08:41 AM	#5
srich250 IH8MUD Rookie Join Date: Apr 2007 Location: Tucson,AZ Posts: 46	the 5 wires off the truck spliced into the the hoppkins adapter/then out to my new 4 flat wiring harness.all connections are tight. __________________ 1997 FJ80, locked w/4.88's, 35 MTR's, 1"spacer +850J/863J

08-05-08, 01:53 PM	#6
corsair23 Hopeless Cruiser Addict Join Date: Apr 2006 Location: Littleton, CO Posts: 1,625	Do you have a lot of lights on the trailer? The reason I ask is that my popup does and I get brake and turn signals but no running/parking lights at the trailer when I turn on the headlights. I've read that the stock Toyota wiring in some cases isn't "strong" enough to power a lot of additional lights so they suggest you add a power source to "up" the power output. My LX came with such a gizmo but I still get nothing at the trailer. When checked at the plug however everything is hooked up correctly. I'm thinking it is time for a new "gizmo"...I can't remember what it is called at the moment but IIRC Hoppy sells it. You run power direct from the battery through this and splice in the wiring for the trailer lights. __________________ '97 LX450 aka "The Whale" with a winch called Damien '97 FZJ80 40th AE, Antique Sage, #267 '74 FJ40, 2F, SM420, 4" Lift, ARB locked front and rear, 33" MTRs '76 FJ40, 2F, 4-speed, 4" Lift, 33" BFG ATs (SOLD)

08-05-08, 02:45 PM	#7
Ebag333 IH8MUD Lifer Join Date: Oct 2006 Location: Medford, OR TLCA# 18864 Posts: 1,270	Or (if this is the case) run LED's. __________________ '97 LX450 - The -mobile '96 LX450 - Mine! Triple locked, 315 General Grabber AT2, OME Medium, 1" body lift, belly skid plate, grey wire mod. Jefferson State Cruisers (A wholely owned subsiderary of OR/CA TACO) Forums

08-06-08, 08:10 AM	#8
srich250 IH8MUD Rookie Join Date: Apr 2007 Location: Tucson,AZ Posts: 46	thanks for the replies but I dont have any power at the end of the plug before even connecting to the trailer. I will resend a new post since I dont think I did this one well enough and i haven't done many and this is driving me nuts not being able to get power thanks all __________________ 1997 FJ80, locked w/4.88's, 35 MTR's, 1"spacer +850J/863J

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