RCMAN46 wrote:
Two things.
First you need to replace the wire nuts with waterproof crimps.
Wire nuts will allow the connections to corrode and will not be able to handle the vibration they will be exposed to.
Second the P3 has a diagonistic feature that will give the current drawn by the brakes.
I have found the current will be very close to 1 amp per volt applied.
This correlates close to the resistance you measured.
I check the voltage applied and current drawn before every trip with the manual lever on my P3.
I felt sure that this comment about the wire nuts would come up. I have used wire nuts like these on trailers for years and have not come across a corrosion problem. However, I will keep a close eye on them. I do use the P3 diagnostic information. FYI, here is the reading that I got on each magnet measured with a Fluke 79 meter on the 40 ohm scale. LF 3.4 ohm, LR 3.9 ohm, RF 3.5 ohm, and RR 3.3 ohm. Thanks for the reply.