The indicator relay has it's timer set by the current drawn by the lamps -
nothing wrong with putting more lamps in parallel with the existing ones but
it drops the resistance of the indicator circuit and that'll slow down the
flashing.

That's why if you replace the standard 21 watt 12 volt lamps with LED-based
lamps, you get indicators flashing really fast or not at all if the relay
cannot handle the rate demanded by the electronics setting the rate and you
need to wire in a 'load' resistor.

If extra lamps are added to an indicator circuit the current draw will be
higher and the flash rate will actually reduce (instead of speed up when the
current draw is less). I don't know if it's a linear relationship between
current draw and flash rate though - haven't got the circuit for the
electronics inside the relay to answer that question yet.

Scotchlock connectors work really well if two conditions are met:

1 - they're the right size to suit the wire gauge (so that the slots in the
    metal cutter plate cut the insulation but don't either cut into the
    copper or not at all if the wire gauge is too small for the connector),

2 - the wires either side of the connector are not put under opposing
    tensile forces which will cause connections to start breaking down and
    increasing resistance due to the copper of the wires starting to pull
    out of the cutter plate and/or insulation starting to creep between the
    copper strands and the slots in the plate.

They also need to be attached properly! Far too many times I've seen
scotchlock connectors (not just in auto applications) with the cutter plate
not pushed in properly, or the cover that clips the thing together not being
clipped down. They'll still work fine if the cover isn't clipped, but it's a
bit of insurance that the cutter plate is still where it should be and that
the wires aren't in tension which twists the connector body and can make the
cover unclip.

Regards,

Craig.