Community Forums

Fredk20716 · 03-21-2023, 05:13 PM

I changed out the dash headlight switch because the OEM dash dimmer worked intermittently. The headlights worked when replaced. I replaced the OEM with an aftermarket part that worked for a week then the lights started to flicker, turn off and now won’t come back on. I replaced the aftermarket with another aftermarket switch with the same results. All other lights; dash, marker, etc work.

I’m thinking perhaps a ground wire came loose when I changed out the switch however a quick inspection didn’t reveal anything. Battery and alternator checkout.

Suggestions?

twinboat · 03-21-2023, 05:35 PM

If its the headlights that are acting up, some switchs have auto reset circuit breakers built into them.

There are 15 amp and 20 amp rated switchs, be sure your replacement is rated the same as the original.

Argosy · 03-21-2023, 06:13 PM

Headlight switches are generally overloaded to start with all the lights on an RV. Look for a good quality aftermarket switch like Standard.

153stars · 03-21-2023, 11:32 PM

Possibly the HL positive female spade connector copper/brass on plug was already heated, annealing it softer and lost its spring grip. Every time plug and unplug it's looser than the first time you unplugged it. You may be able remove and tighten or replace it. If it's old style HL switch they used 1/4" double roll crimp locking spade and tool you can buy. Well you can many automotive plug and pin parts and tools/kits but the one I'm thinking is much cheaper and much more useful then after. At least my old coach has a 1000 spades . I could crimp and use soft insulated covers or hear shrink crimp area. Not many cheap Chinese ones really work up to 12ga. Like these.
25 Packard 56 Series Female 12 Gauge Terminals For GM 2989877 https://a.co/d/7OW09Ab
You can get a mechanical drawing of them ....the brand sells longer type for different plug.
Another USA source top quality
https://www.eastwood.com/search/?q=TERMINALS%2C+Female

THenne1713 · 03-22-2023, 12:45 AM

But good wiring inspection at HL assembly on BOTH sides MIGHT reveal a shorting issue that needs repair; e.g. when MY TS Left quit, I found the socket had spit the bulb into the assembly, just laying there; when the headlights flickered, i found the Plugs loose on back of bulb. Go figure, fine pot-hole roads we have?