Re: trailer turn signal problem
Found the flasher(s) it has two one for the right and one for the left. They have many pins in them.
Ok, I see how that complicates things. I was unaware the offshore companies made a flash so technical.
One solution now, is add 2 small Bosch style relays at the car tail lights.
Supply a 12 v line to the contact, (30), take the switch (87) to the green trailer wire, ground one coil lead (85) and connect the other coil lead (86) to a car signal lead.
Repeat for the yellow trailer wire from the other car signal light.
The relay coil is 73Ω, compared to a trailer lamp of 2-3Ω.
OR, change the trailer lamps to LED's. 1157's (dim & bright, double pin) are $10-$12 a pair. besthongkong.com