Need Electrical Help
#1
Need Electrical Help
I'm usually pretty good with electrical work, but this has got me stumped! I bought a set of KC Slimlites, got them all installed, and the work great with the KC switch, but I would like to hook them up to a second OEM foglight switch I have installed in my radio bezel. I tried to hook them up using the wiring pigtail colors I got from R-F, but they will not turn on. I tried 3 different OEM switches, including the one that I know works, in case the ones that I got at the JY are bad, but still no lights. Again, they work fine with the KC switch
What am i doing wrong here? Any electrical wizards have any ideas or suggestions?
Thanks in advance
MikeR
What am i doing wrong here? Any electrical wizards have any ideas or suggestions?
Thanks in advance
MikeR
#3
Using the KC wiring harness complete. Ran the load and feed wires from relay into cab. Tapped into high beams-KCs are driving lights-per the instructions. Like I said--everything works fine with the switch from the kit-even the LED on the switch--it's just not working with the Ford switch. Any thoughts?
Thanks
MikeR
Thanks
MikeR
#5
#8
Ok-
Here is how the KC wiring harness is hooked-up:
Term 87 & 87a-Power out to lights
Term 85-Chassis ground
Term 30-fused to battery pos post
Term 86-load into cab for switch
There is also a wire that is the trigger wire tapped into the high beams that alson runs into the cab for the "supply" for the KC switch, and then there is a ground for the switch in the cab only.
So, it looks like I need to cut the connector off of the KC harness and rearrange the wiring, tap into the wires going out to the lights and run that into the cab(87,87a), with a fuse(?), Run ground (85) into cab, hook high beam trigger into 86 and I should be set?
Basically swap term 85 & 86? Which wires go to what on the pictail for the OE switch?
Thanks
MikeR
Here is how the KC wiring harness is hooked-up:
Term 87 & 87a-Power out to lights
Term 85-Chassis ground
Term 30-fused to battery pos post
Term 86-load into cab for switch
There is also a wire that is the trigger wire tapped into the high beams that alson runs into the cab for the "supply" for the KC switch, and then there is a ground for the switch in the cab only.
So, it looks like I need to cut the connector off of the KC harness and rearrange the wiring, tap into the wires going out to the lights and run that into the cab(87,87a), with a fuse(?), Run ground (85) into cab, hook high beam trigger into 86 and I should be set?
Basically swap term 85 & 86? Which wires go to what on the pictail for the OE switch?
Thanks
MikeR
#9
No.
The 4 switch connections:
At the relay:
The "positive trigger" could be one of several depending on how the lights will be allowed to operate when the switch is on:
The 4 switch connections:
- pin 3 LB/BK from relay coil to switch contacts
- pin 4 BK chassis ground
- pin 5 LB/RD Night illumination power (Some years have RD/BK color code instead)
- pin 6 TN/OR Hot from lamp power wire for "ON" LED
At the relay:
- Pin 30: Fused battery power source for the KCs
- Pin 87: Switched power out to KC's and branch to the ON indicator
- Pin 87A: Not used
- Pin 85: to LB/BK of switch
- Pin 86: positive trigger
The "positive trigger" could be one of several depending on how the lights will be allowed to operate when the switch is on:
- Always allowed: battery positive
- Only when the key is on: switched battery voltage from ignition switch
- Only when low beams are on: low beam hot
- Only when high beams are on: high beam hot
- Whenever low beam, high beam or parking lamps are on: parking lamp hot
#10
Thanks a million for your help, Bob. Since pin 87a is used in the original pigtail(for one of the 2 lights), can I still utilize that as the second "out" rather than splicing the 2 light leads together? If it will still work, I'd rather go that route. I'm going to try to reuse the KC pigtail/connector 'cause it keeps things neater. Thanks again.
MikeR
MikeR
#11
No. Pin 87A is "normally closed" to 30 but pin 87 is "normally open" to 30. So, when the relay connects 87 to 30, it also disconnects 87A from 30 and vice versa.
#12
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