Flasher is almost a Relay by itself. However a relay after the flasher won't work because flasher requires the bulbs load to work. A Relay before the flasher makes almost no sense because there is not a trigger to make it work really. The hazard one would be always engaged, while the turning, will be engaged as soon you put the Ign switch on.
Now, a trigger for the dome light.... well I would prefer to make the right thing which is a proper electrical system maintenance. Relay for dome light will solve the problem for it but won't fix the real problem.
Wondering when ppl will stop to patch the electrical stuff instead get deep into the deal to fix the worn and damaged parts!
I think the 'Relay' comment is more directed to doing a Headlight rewire. You can get a nice H4 'Chinese' made one for $10 off Ebag but if you use one on a 6024 or 4656 headlight you must move two pins as a H4 and 6024/4656 use the same connector but for some reason they flipped two pins, Low beam and Ground pins.
H4 headlight relay kit:
https://www.ebay.com/itm/Headlight-H4-Headlamp-Light-Bulb-Ceramic-Socket-Plugs-Relay-Wiring-Harness-Kit/273763423866?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
I do repairs as needed and if its not a 'Points Show' car I will cut old wires out and replace with better quality and replace bulkhead connectors as needed. I order 45 sets of the bulkhead connectors at a time to have some on stock. Bulkhead connectors also work on most spade connectors all over the body of a Mopar.
Bulkhead Connectors:
https://www.ebay.com/itm/Mopar-Male-Female-14-16-AWG-Gauge-Wiring-Harness-Terminal-Crimp-Connectors-NOS/192502001151?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
I have two 4X8 foot sheets of 5/8" plywood here. On sheet 1 is the wiring layout where I took a 1964 Studabaker Daytona's wiring harness and used brad nails to make the layout. I then replaced 1 wire at a time, put new connectors on and rewrapped with glue-free vinyl tape. I pulled the brads out but my ink pin marks are still on it. Flip side in my 1965 Barracudas wiring layout. Second sheet is my 1978 Little Red's wiring and flip side is one for 1984 L body Omni/Charger
