| Author |
Message |
Bob Baldwin (Bob4106)
Registered Member
Username: Bob4106
Post Number: 137
Registered: 10-2004
Posted From: 24.74.180.20
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, November 11, 2007 - 1:15 pm: | |
I'm trying to wire my towdolly. My setup for the towdolly is a 4 plug set up; white is ground, brown for tail lights, yellow for left turn/stop and green for right turn\stop.
My bus brake lights are septerate from my bus turn signals, how should my connections be wired? Do I need to purchase any kind of adapters? |
Glenn Williams (Glenn)
Registered Member
Username: Glenn
Post Number: 103
Registered: 6-2006
Posted From: 216.163.57.67
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, November 11, 2007 - 2:52 pm: | |
If your lights/bus are 12 volt, you can go to your auto parts supplier and ask for a 5 wire to 4 wire converter. They are very easy to install. Just splice it in. If you are 24 volt, you will need to reduce the voltage down to 24 volt. |
Dan West (Utahclaimjumper)
Registered Member
Username: Utahclaimjumper
Post Number: 72
Registered: 1-2005
Posted From: 208.66.38.115
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, November 11, 2007 - 3:17 pm: | |
Glen, he has a 4106 so 4 wires and a ground will work.>>>Dan |
Bob Baldwin (Bob4106)
Registered Member
Username: Bob4106
Post Number: 138
Registered: 10-2004
Posted From: 24.74.180.20
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, November 11, 2007 - 6:05 pm: | |
I'm just thinking that the brake and trun's are septerate.
If I add a brake line to the left trun and right turn will that work right |
Bruce Henderson (Oonrahnjay)
Registered Member
Username: Oonrahnjay
Post Number: 178
Registered: 8-2004
Posted From: 68.55.108.125
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, November 11, 2007 - 7:15 pm: | |
__. Bob, the brake signal is "incorporated" in the brake/turn circuit on "three-way" wiring (that's three hot and ground). Your coach has "four hot and a ground". So the adaptor has diodes and connections that split the brake light circuit (as well as passing through the turn signal circuit) to the two "heavy filaments". The "light filaments" are used only for the taillamp circuit.
__. The problem with adding "a brake line to the left trun and right turn will that work right" is that the brake circuit will probably feed across - the brake circuit will work OK but everytime you hit the turn signal, both turn signals in the dolly will flash at the same time.
__. Unless you intend to do some pretty sophisticated wiring, you have two choices --
1) Use the "5-to-4" adaptor, taking the four signals from your bus (plus a ground) to the three circuits to the dolly (plus ground).
2) Or change wiring on the dolly so that you have a taillamp filament on both sides, a brake filament on both sides (both of these filaments are "siamesed" together so that they're fed with one wire for hot for each circuit), and a separate turn signal circuit and filament, one for each side. |
Bob Baldwin (Bob4106)
Registered Member
Username: Bob4106
Post Number: 139
Registered: 10-2004
Posted From: 24.74.180.20
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, November 11, 2007 - 8:19 pm: | |
Thanks
I under stand now |
Jim & Linda Callaghan (Jimc)
Registered Member
Username: Jimc
Post Number: 42
Registered: 2-2004
Posted From: 66.175.206.159
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, November 11, 2007 - 9:25 pm: | |
it sounds to me like his wiring is the same as mine, run lights, brake lights, and amber turn signals.
I bought an adapter at NAPA that is used to convert foreign vehicles to the standard trailer we are used to. Everything is included in the adapter box,after running the wires to it you just plug in like normal.
Jim |
Jerry Liebler (Jerry_liebler)
Registered Member
Username: Jerry_liebler
Post Number: 296
Registered: 3-2005
Posted From: 67.140.168.194
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, November 12, 2007 - 10:12 pm: | |
Bob,
Since the bus has separate brake lights and turn signal lights and the towed or trailer has a single light that must serve both as a brake light and a turn signal you will need an adapter. The adapter cannot be made of just diodes! It must contain at least 3 SPDT relays. If the bus is 24 volt, using 24 volt coiled relays and a source of 12 volt power with the same converter also handles 24 volt to 12 volt conversion. From the bus the left turn bulb is paralleled with a relay, similarly the left turn signal bulb is paralleled with another relay and the brake bulb is paralleled with the third. The common contacts of each of the turn signal relays go to the respective bulb on the towed. The common contact of the brake relay is connected to 12 volt power. The normally closed contacts of the turn signal relays are connected to each other and the normally open contact of the brake relay. And the normally open contacts of the turn signal relays are connected to each other and the normally closed contact of the brake relay.
Regards
Jerry 4107 1120 |
Jerry Liebler (Jerry_liebler)
Registered Member
Username: Jerry_liebler
Post Number: 297
Registered: 3-2005
Posted From: 67.140.168.194
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, November 12, 2007 - 10:26 pm: | |
Please correct my post above. One relay coil accross left turn signal bulb and one accross the right turn signal bulb. Sorry about that.
Regards
Jerry 4107 1120 |